Intel iMac 17" 1.83Ghz Memory Issue

Hello,
I recently received an iMac that would not boot. After seeing the ram used was Hynix I figured the RAM was bad (I've had nothing but problem with Hynix in Apple and Dell products).
Turns out I was right; after pulling those out and putting in a stick of Kingston, everything worked.
However, for some reason my iMac can only have 1 stick of RAM in it. The slot doesn't matter, as long as there is only one stick. If I put a second stick in, I get no boot audio and the screen stays black.
I've tried 2 x 1GB DDR2-667 and 2 x 2GB DDR2-667. Tried these in my laptop with memtest86+ and they had no issues. Currently I'm just using 1 x 2GB stick.
At first I was concerned that the memory controller was bad; memtest86 on the iMac would fail regardless of the RAM but this turned out to be an issue with memtest86 and mac hardware.
Does anyone have any suggestions, or has anyone else experienced an issue like this?
I'm open to reinstalling OSX (currently running Ubuntu 8.10 and Windows XP on it) if there are any diagnostic tools on it that may be helpful in finding out what this issue may be.
Thanks

Hi Termina
The Early 2006 Core Duo and Late 2006 17" 1.83GHz Core 2 Duo iMac's only support a total of 2GB of ram.
http://support.apple.com/kb/TA23843?viewlocale=en_US
2 x 1GB modules would be the maximum ideal upgrade for that system, but if there is a bad slot then you should be fine running the current 1 x2GB module.
Dennis

Similar Messages

Intel iMac freezes, reboots and other issues

Intel iMac 17" 1.83 Ghz model (Had for a while now)
1 GB of 667 MHz DDR2 SDRAM installed (Mac detects this fine)
Mac OS X 10.4.8
Beginning yesterday, the Mac froze when shutting World of Warcraft (which had been installed and working for at least two months). Computer completely hung. Restarted machine.
A few minutes later, the machine just switched itself off (or appeared to) - screen goes black. I held in power button for five seconds until I heard a click in the machine. This has happened repeatedly.
One time, the machine froze and the monitor refreshed at a visible rate (I could see the scan line) - each time the screen got darker.
Often, it will turn on, but the OS won't load unless I hold Alt down, or if I use OptionAlt+PR.
Ran disk utility from the install disk, only minor issues, all fixed. The problem of turning off still occurred.
Nothing in the kernel panic log. Diagnostics in System Profiler is saying it passes on the power on self test.
The confusing thing is, that after last night, I pulled the plug out, went to bed, praying to the computer fairy to fix it. This morning, it ran fine continuously for about 8 hours, running WoW, IRC app, iTunes etc. all fine.
Could it be a power supply issue? Is the thing overheating (the Mac is up to date with EFI Firmware update and SFC Firmware update).
I'm utterly stumped as to what's causing it. I don't want to send the thing off as then I'm without a computer.
Any ideas or advice?

Has it done it since?

Any others with 27" iMac 10.9.4 memory issues... my experience.

Hi, I just thought I would provide my experience here to both see if others have seen and dealt with the issue - and to alert others that this may be something worth considering in upgrading from Mac OSX 10.9.3
My 27" iMac 11,1 update to 10.9.4 was a disaster. From the time I restarted my Mac it bogged down in performance and my applications were being paused (as seen in the Force Quit window). The mermory task_kernel was grabbing over 5 GB of my 8 and not letting go. At idle with no applications running all was fine with memory, but the moment I launched any of my standard browser (Firefox or Safari) or Windows apps (Outlook, PPt, Word, etc) or nearly anything else the Mac ground to a halt and applications were being Paused. Quitting applications did not release memory from task_kernel.
I finally re-installed Maverics from scratch and nothing changed. I tried Disk permissions and cleaning out as much as I dared and re-updating things like Flash but nothing made a difference.
For 3 days I searched all over the net for answers and could only find some reference to changing files that are energy-management related. Apparently this was an issue for many portable users in the upgrade. I tried their work around but this did not work for me either.
Being without a working Mac was getting to be too much so I finally decided to go backwards and used Time Machine (thank you, thank you, thank you Time Machine!) to go back to my last backup with 10.9.3. I held my breath when it started and with Activity Monitor running all started fine... and stayed fine! And has for days now.
By the way, I have an identical iMac with same software that was not upgraded that has stayed fine as well with every other upgrade but 10.9.4.
I do not know why this problem happened but clearly 10.9.4 is either not properly tuned for my Mac or it is creating a not so obvious conflict that is beyond my ability to manage. I could spend days trying to figure this out - or - just leave well enough alone and hope that Apple fixes the issue or let's us know what is going on that we should fix.
For now, it's goodbye 10.9.4 and will be looking forward to but apprehensively at 10.9.5

Sorry, I had it ready didn't post. Even have the log file as it was happening. I took a video of Activity Monitor during it too.
EtreCheck version: 1.9.13 (49)
Report generated 15 August 2014 1:41:52 pm AEST
Hardware Information: ?
    iMac (27-inch, Late 2009) (Verified)
    iMac - model: iMac11,1
    1 2.8 GHz Intel Core i7 CPU: 4 cores
    8 GB RAM
Video Information: ?
    ATI Radeon HD 4850 - VRAM: 512 MB
        iMac 1920 x 1080
        VGA Display 1024 x 768 @ 60 Hz
System Software: ?
    OS X 10.9.2 (13C1021) - Uptime: 4 days 20:42:36
Disk Information: ?
    ST31000528ASQ disk0 : (1 TB)
    S.M.A.R.T. Status: Verified
        EFI (disk0s1) <not mounted>: 209.7 MB
        Macintosh HD (disk0s2) / [Startup]: 999.35 GB (717.56 GB free)
        Recovery HD (disk0s3) <not mounted>: 650 MB
    OPTIARC DVD RW AD-5680H
USB Information: ?
    Western Digital My Book          1 TB
        S.M.A.R.T. Status: Verified
        disk4s1 (disk4s1) <not mounted>: 32 KB
        MUSIC AND PHOTO BACKUP (disk4s3) /Volumes/MUSIC AND PHOTO BACKUP: 1 TB (479.91 GB free)
    Iomega Iomega Select HDD 250.06 GB
        S.M.A.R.T. Status: Verified
        EFI (disk5s1) <not mounted>: 209.7 MB
        Frogster 1 250 GB Portable (disk5s2) /Volumes/Frogster 1 250 GB Portable: 249.72 GB (246.19 GB free)
    Seagate Portable         500.11 GB
        S.M.A.R.T. Status: Verified
        EFI (disk3s1) <not mounted>: 209.7 MB
        500GB Portable (disk3s2) /Volumes/500GB Portable: 499.76 GB (173.28 GB free)
    Western Digital My Book 1140 2 TB
        S.M.A.R.T. Status: Verified
        EFI (disk2s1) <not mounted>: 209.7 MB
        disk2s2 (disk2s2) <not mounted>: 2 TB
        Boot OS X (disk2s3) <not mounted>: 134.2 MB
    Apple Computer, Inc. IR Receiver
    Apple Inc. Built-in iSight
    General UDisk            1.94 GB
        S.M.A.R.T. Status: Verified
    Apple, Inc. Keyboard Hub
        Apple, Inc Apple Keyboard
    Apple Inc. BRCM2046 Hub
        Apple Inc. Bluetooth USB Host Controller
    Apple Internal Memory Card Reader
Gatekeeper: ?
    Anywhere
Kernel Extensions: ?
    [loaded]    com.Cycling74.driver.Soundflower (1.5.2) Support
    [loaded]    com.Perfect.Driver.SystemAudioRecorder (1.0.0 - SDK 10.9) Support
    [not loaded]    com.elgato.driver.DontMatchAfaTech (1.1) Support
    [not loaded]    com.elgato.driver.DontMatchCinergy450 (1.1) Support
    [not loaded]    com.elgato.driver.DontMatchCinergyXS (1.1) Support
    [not loaded]    com.elgato.driver.DontMatchEmpia (1.1) Support
    [loaded]    com.logmein.driver.LogMeInSoundDriver (1.0.3 - SDK 10.5) Support
    [loaded]    com.movavi.driver.SoundGrabber (1.6.5 - SDK 10.6) Support
    [not loaded]    com.pctools.iantivirus.kfs (1.0.1) Support
    [loaded]    com.seagate.driver.PowSecDriverCore (5.2.6 - SDK 10.4) Support
    [not loaded]    com.seagate.driver.PowSecLeafDriver_10_4 (5.2.6 - SDK 10.4) Support
    [loaded]    com.seagate.driver.PowSecLeafDriver_10_5 (5.2.6 - SDK 10.5) Support
    [not loaded]    com.seagate.driver.SeagateDriveIcons (5.2.6 - SDK 10.4) Support
    [not loaded]    com.wdc.driver.1394HP (1.0.11 - SDK 10.4) Support
    [not loaded]    com.wdc.driver.1394_64HP (1.0.1 - SDK 10.6) Support
    [not loaded]    com.wdc.driver.IOFireWireWDHID (1.1.2) Support
    [loaded]    com.wdc.driver.USB-64HP (1.0.1) Support
    [not loaded]    com.wdc.driver.USBHP (1.0.13) Support
    [not loaded]    net.Thomson.iokit.USBLAN_usbpart (1.6.0) Support
Startup Items: ?
    WDBMService: Path: /Library/StartupItems/WDBMService
Problem System Launch Daemons: ?
    [failed]    com.apple.wdhelper.plist
    [running]    com.seagate.TBDecorator.plist Support
Launch Daemons: ?
    [loaded]    com.adobe.fpsaud.plist Support
    [running]    com.cleverfiles.cfbackd.plist Support
    [not loaded]    com.google.keystone.daemon.plist Support
    [not loaded]    com.logmein.logmeinblanker.plist Support
    [not loaded]    com.logmein.logmeinserver.plist Support
    [loaded]    com.logmein.raupdate.plist Support
    [loaded]    com.microsoft.office.licensing.helper.plist Support
    [loaded]    com.oracle.java.Helper-Tool.plist Support
    [loaded]    com.oracle.java.JavaUpdateHelper.plist Support
    [not loaded]    com.portents.changerd.plist Support
    [not loaded]    com.portents.changermediaid.plist Support
    [loaded]    com.timesoftware.timemachineeditor.helper.plist Support
    [loaded]    com.vmware.launchd.vmware.plist Support
    [loaded]    fi.polar.libpolar.plist Support
    [running]    fi.polar.polard.plist Support
Launch Agents: ?
    [running]    com.brother.LOGINserver.plist Support
    [not loaded]    com.google.keystone.agent.plist Support
    [failed]    com.logmein.LMILaunchAgentFixer.plist Support
    [not loaded]    com.logmein.logmeingui.plist Support
    [not loaded]    com.logmein.logmeinguiagent.plist Support
    [not loaded]    com.logmein.logmeinguiagentatlogin.plist Support
    [loaded]    com.oracle.java.Java-Updater.plist Support
User Launch Agents: ?
    [not loaded]    com.adobe.ARM.[...].plist Support
    [not loaded]    com.leadertech.PowerRegister.SEA1.6cd89bc1180f7c681347ee4dd84555e2.plist Support
    [not loaded]    com.macpaw.CleanMyMac.helperTool.plist Support
    [not loaded]    com.macpaw.CleanMyMac.trashSizeWatcher.plist Support
    [not loaded]    com.macpaw.CleanMyMac.volumeWatcher.plist Support
    [not loaded]    com.macpaw.CleanMyMac2Helper.diskSpaceWatcher.plist Support
    [not loaded]    com.macpaw.CleanMyMac2Helper.scheduledScan.plist Support
    [not loaded]    com.macpaw.CleanMyMac2Helper.trashWatcher.plist Support
    [not loaded]    com.microsoft.LaunchAgent.SyncServicesAgent.plist Support
    [not loaded]    com.seagate.dashboard.plist Support
User Login Items: ?
    SmartDaemon
    GrowlHelperApp
    Microsoft Outlook
    WebSync
    Microsoft Database Daemon
    Radioshift Helper (2427993400)
    AdobeResourceSynchronizer
    Dropbox
    Google Drive
    Firefox
    Skype
    iAntiVirus
    WDQuickView
Internet Plug-ins: ?
    AdobePDFViewerNPAPI: Version: 10.1.10 Support
    Flash Player: Version: 14.0.0.145 - SDK 10.6 Outdated! Update
    AdobePDFViewer: Version: 10.1.10 Support
    LogMeInSafari32: Version: 1.0.730 Support
    iPhotoPhotocast: Version: 7.0
    RealPlayer Plugin: Version: Unknown
    DirectorShockwave: Version: 11.0.0r430 Support
    Loki: Version: 3.0 Support
    LogMeInSafari64: Version: 1.0.730 Support
    FlashPlayer-10.6: Version: 14.0.0.145 - SDK 10.6 Support
    QuickTime Plugin: Version: 7.7.3
    AmazonMP3DownloaderPlugin: Version: Unknown
    DivXBrowserPlugin: Version: 1.4 Support
    Silverlight: Version: 5.1.20913.0 - SDK 10.6 Support
    LogMeIn: Version: 1.0.730 Support
    Google Earth Web Plug-in: Version: 5.1 Support
    Default Browser: Version: 537 - SDK 10.9
    Flip4Mac WMV Plugin: Version: 2.3.2.6 Support
    SharePointBrowserPlugin: Version: 14.3.9 - SDK 10.6 Support
    JavaAppletPlugin: Version: Java 7 Update 65 Check version
    OfficeLiveBrowserPlugin: Version: 12.3.3 Support
Audio Plug-ins: ?
    BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
    AirPlay: Version: 2.0 - SDK 10.9
    AppleAVBAudio: Version: 203.2 - SDK 10.9
    iSightAudio: Version: 7.7.3 - SDK 10.9
iTunes Plug-ins: ?
    Quartz Composer Visualizer: Version: 1.4 - SDK 10.9
User Internet Plug-ins ?
    bjnplugin_2.6.255.8: Version: bjnplugin 2.6.255.8 - SDK 10.8 Support
    bjninstallplugin_2.6.255.8: Version: bjninstallplugin 2.6.255.8 - SDK 10.8 Support
    BrowserPlus_2.9.8: Version: 2.9.8 Support
    fbplugin_1_0_1: Version: (null) Support
    Picasa: Version: 1.0 Support
    RealPlayer Plugin: Version: (null) Support
3rd Party Preference Panes: ?
    BrowserPlus Support
    DivX Support
    Flash Player Support
    Flip4Mac WMV Support
    Growl Support
    Iomega Active Delivery Support
    Java Support
    MacFUSE Support
    Seagate Dashboard for Mac OSX Support
    WDQuickView Support
Time Machine: ?
    Skip System Files: NO
    Mobile backups: OFF
    Auto backup: YES
    Volumes being backed up:
        Macintosh HD: Disk size: 930.71 GB Disk used: 262.43 GB
    Destinations:
        Frog Pond Master Backup [Local] (Last used)
        Total size: 2
        Total number of backups: 25
        Oldest backup: 2013-11-25 14:20:27 +0000
        Last backup: 2014-08-15 03:10:33 +0000
        Size of backup disk: Adequate
            Backup size 2 > (Disk used 262.43 GB X 3)
    Time Machine details may not be accurate.
    All volumes being backed up may not be listed.
Top Processes by CPU: ?
        69%    firefox
        48%    Finder
         6%    plugin-container
         5%    WindowServer
         4%    Microsoft Outlook
Top Processes by Memory: ?
    2.78 GB    firefox
    213 MB    plugin-container
    164 MB    Finder
    147 MB    SafariDAVClient
    90 MB    Microsoft Outlook
Virtual Memory Information: ?
    171 MB    Free RAM
    2.23 GB    Active RAM
    2.08 GB    Inactive RAM
    1.21 GB    Wired RAM
    64.70 GB    Page-ins
    4.67 GB    Page-outs

Intel Imac Tiger 10.4 boot issue/USB Boot

Intel 20 inch Imac had been CLEAN install Tiger 10.4 from
Grey Original install disks. ALL hardware and O/S working perfectly fine.
Tried to upgrade to Leopard 10.5 but after startup the installer does a "data integrity check"
and reported a " dirty/defective " spot on the Leopard dvd disk and then it offered selection
to restore/reboot back to the original Tiger 10.4 O/S.
The Installer script/process failed and somehow screwed up the boot process.
The leopard disk would not eject. (I have since manually removed it and destroyed it as defective).
What I get now on boot up is the boot tone grey-white screen then the apple shows up then I get
a black screen with the following error message:
localhost:/ root# CSRHIDTransitionDriver::stop
IOBluetoothHCIControler::start Idle Timer Stopped
At this point I hit Enter key and get the following standard root prompt:
localhost:/ root#
I can traverse directories and list files ( cd dirname ),( ls -al) and the original clean Tiger 10.4 instalation
seems to be present and largly intact.
Many commandline commands work but many do not issuing an error like path/image not found.
" info diskutil " displays man page for diskutil. ctrl c exits the man page.
" diskutil list " returns the following:
dyld: Library not loaded: /System/Library/Frameworks/CoreServices.framework/Versions/R/Frameworks/WebServ icesCore.framework/Versions/R/WebServicesCore
Referenced from: /System/Library/Frameworks/CoreServices/.frameword/Versions/R//CoreServices
Reason: image not found
Trace/BPT trap
I have tried ALL the usual boot up keypresses that should invoke boot selection menus and other
such utilities but none of these work.
I need some kind of manual command/script/other process to repair the boot process or to FORCE
a boot to an external USB dvd drive from which I have the Tiger install disk so that
I may format the hard disk and redo a clean Tiger 10.4 install.
If there are any mac/BSD/Linux command line gurus in Long Island, NY area
I would be happy to demonstrate this most agrevating issue at the site.
Tnx for your help
Alfred
631-928-2424
billing -AT- adayton _dot_ com

check the knowledgebase. I believe you need to "zap" the PRAM. I had this problem with a macbook and whatever's in the kb solved it permanently.

Intel iMac Randomly restarts, and delayed boot-ups when powered on from off

First, bought the iPod (20gig w/ photo display). Love it. Still use it. Never a problem.
Then bought a MacBook in '06. Love it. Only a few problems along the way but easily fixed.
So, based on that, bought the 20" aluminum intel-iMac (2.4GHz, 2GB memory, 320HD)in October. Loved it. Never a problem. Not one. Until...
...I installed Leopard. What a headache. I've solved all of the problems with help from the forum etc. except one:
iMac waits 3-20 minutes before it feels like "waking up" after I've powered it on, and when it does finally boot-up into OS it restarts upon a whim, sometimes after half an hour or so and sometimes after just a few minutes. Problem.
After searching the discussions and reading through the posts I can't find a solution.
Any suggestions?
(There's nothing external connected to iMac except the keyboard. There are no 3rd party upgrades. All updates successfully downloaded. And I've unplugged the power cord several times. It is the only way to get the iMac to power on and, eventually, boot up again.)
Any help is much appreciated.
Tulliver

Thanks for the reply, Dennis.
I was able to try the SMC instructions and use Disk Utility before posting my question. It didn't help.
Since posting my question I talked to the Apple guys where we purchased our iMac and after discussing the problems they're quite certain it is a hard drive problem. I take it in tomorrow.
The problem with my post is that I left out the most glaring symptom (good thing I am not a doctor).
My Mac's start-up disk is not named "Macintosh HD". It was. Now it is named ""?????????. So, even though both "Repair Disk" and "Apple Hardware Test" came up just fine, no problems, there is something wrong with my Startup Disk. I had hoped upgrading to Leopard using the "erase and install" method would fix the problem. It didn't. And I just now brought the iMac to its original "Tiger" state and the startup Disk is still called ""?????????. The Apple guys say HD problem. They'll figure it out for certain on Monday.
Thank goodness for back-up hard drives.
Thanks again Dennis for your input.
Tulliver

Intel iMac Power / Overheat issue?

Hi there,
I have an Intel iMac from 2006. About 2 years ago it started to just turn itself off randomly as if there was a power failure. When it does, the only way to power it back up is to switch it off at the plug, switch it back on and press the power button (strangely) twice. I have noticed it seems to be temperature related - when my iMac reaches around 78C (which I'm pretty sure it should be able to handle fine?) it tends to be in the danger zone and at any minute can switch itself off.
I've got around this by using smcFan Control - which thankfully displays the temperature in the menu bar meaning when I hit around 72C I can whack the fans up to full blast to keep the temperature down. Being a sound studio computer - the hum of the fans really isn't ideal, but it at least makes my computer usable. However, I'm currently in the middle of a big project on Logic and I've had to turn my room into a fridge (window open-more clothes on) to be able to work on it as all the processing involved heats it up to 75C+ in no time.
I was hoping someone could shed some light on this or at least tell me if I am right in thinking that 78C is nothing really and the iMac should deal with it easily.
I have seen tons of posts regarding the G5 iMac power problems and similar problems with the intel iMacs - I've done all the hardware resets (PRAM, SMC, PMU) as suggested in these forums but nothing has helped.
I have had the power supply changed in the past (before this problem arose) as one day it just went kaput. Don't know if that makes any difference but I'm pretty sure that the problem started a little while after the replacement was installed.
Thanks in advance!
Message was edited by: Lee_Head

LR is a Universal Binary app. YOu're good to go. I did a migration from iBook to MacBook recently with no issues.
Don
Don Ricklin, MacBook 1.83Ghz Duo 2 Core running 10.4.9 & Win XP, Pentax *ist D
http://donricklin.blogspot.com/

Performance issue with brand new intel iMac extreme

I am at a loss to explain a problem I've been having and I thought I might put it out to you guys.
In September I purchased a macbook Pro (2.4 ghz, 4 GB RAM) to use in video editing with Final Cut Pro, and for the most part I've been thrilled. I use 1TB LaCie external drives connected via FW800, and perform Multiclip editing with 4-5 video streams at a time and only on occasion have dropped frames during the editing process.
In December I determined that I needed to have an additional system, and thought a 2.8Ghz Intel iMac extreme would be an excellent choice, since for the same price I could get a little more power in the processor, more hard drive space and a bigger screen to work on. When we picked up the new system in the store (The Grove Apple Store in LA), we had them upgrade the memory to 4GB.
Since day one we have had performance issues, including problems playing streaming and DVD video, severe delays mounting and unmounting drives (firewire and USB) and application images, and freezing while doing even simple tasks like printing or checking email. These problems occur even while there are no external drives are connected. I have none of these issues with the Macbook Pro, which has virtually an identical set of programs installed, and both running the same version of Leopard.
I already took the original iMac back to the store, and they exchanged it, but did not have 4GB sets of RAM in stock so they took the RAM from the original machine and put it in the new one. They said if I continued to have problems then it was most likely the RAM and I should come back when they got more in stock. I DID have the same problems with the new machine, and took it back to the Apple Store and they swapped the memory. It seemed to improve the issue, but now I'm seeing the same severe performance issues again.
All tech support can do is tell me to do a PRAM reset, which seems to improve things very temporarily (but that may be my imagination) or have me restart, which at least has the ability to make the printing of documents capable.
What I'm wondering is if it is likely that the RAM is the issue and I just got another bad batch, or if the iMac has some weird glitch that isn't present in the macbook Pro...?? Or could I have possibly gotten 2 bad systems in a row? It's extremely frustrating, and I KNOW it shouldn't be this way! It's so bad I get better performance out of my single-core G5 tower! How do I get a good working system that operates like it should? Am I better off getting another Macbook Pro? I'd rather not for several reasons...
I have xbench on both the MBP and the iMac and can provide test numbers if they'll help, as well as any other info.
Thank you so much for reading my novella of a post and also for any insight you have!
Best,
Travis

Hi!
I got the same problem with my MacBook when it still was new in may 2006. It was supposed to be one of the faster Laptops around but it was soooo slow it drove me nuts. I can only advise to have a look if there is something hugging up your RAM and run some tests using these programs on your machine:
Xbench:
http://www.macupdate.com/info.php/id/10081
MenuMeters:
http://www.macupdate.com/info.php/id/10451
If they show any unusual results you might have your problem...
As to my problem with the MacBook: I did a complete re-install (writing the harddisk over with zeroes) and suddenly everything was just fine. (But be sure to back all your files before that, I learned this one the hard way.) I know it is just a standard answer, but it worked out for me this time...
Hope this helps in some ways.
Cheers,
Rene

2007 Intel iMac with sleep/wake issues

Subject: 2007 Intel iMac, 2GHz, 4GB RAM, 10.5.6
I'm having difficulty troubleshooting this one and would greatly appreciate any advice/help. Basically this iMac will develop all kinds of problems over night. It will be put to sleep in the evening and in the morning it will be off or it won't wake from sleep. I don't think it's a power issue, as other computers aren't affected.
If you manually turn it off and then on again, it won't recognize the startup volume. Usually at this point nothing will work except Diskwarrior will find and repair some errors and it will work again for the rest of the day, but come morning, the problems return.
I've replaced the memory, changed all peripherals, completely rebuilt the OS (clean install), even replaced the battery backup unit. I've reset the PRAM and the SMC, ran surface scans on the hard drive, as well as all available tests in Tech Tool and Rember. Nothing found. SMART status is clear.
It seems to only happen over night. If I put it to sleep mid-day, it'll wake just fine, although perhaps there's a difference between that short sleep and its nightly slumber which is the key??
I don't think there's a software issue because the person who uses it basically only uses Mail, Safari, Firefox, and occasionally iWork apps. I'll put the latest crash report in a follow-up post, but I don't quite understand its contents and I'm hoping it will provide a clue which someone can help me with.
Thanks for reading this far - I look forward to any responses!
Rey

Here's the latest crash report. It seems to have originated after sunday night's crash, which is why it shows 10.5.4, which was installed by combo update yesterday. Last night's crash doesn't seem to have a report...
Process: DirectoryService [31]
Path: /usr/sbin/DirectoryService
Identifier: DirectoryService
Version: ??? (???)
Code Type: X86 (Native)
Parent Process: launchd [1]
D
ate/Time: 2009-04-06 14:57:34.297 -0600
OS Version: Mac OS X 10.5.4 (9E25)
Report Version: 6
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Crashed Thread: 1
Thread 0:
0 dyld 0x8fe12fd1 ImageLoaderMachO::doTermination(ImageLoader::LinkContext const&) + 241
1 dyld 0x8fe04f7b dyld::runTerminators(void*) + 155
2 libSystem.B.dylib 0x9592afdc _cxafinalize + 241
3 libSystem.B.dylib 0x9592aed0 exit + 33
4 DirectoryService 0x00015f3b main + 351
5 DirectoryService 0x00015dbe start + 54
Thread 1 Crashed:
0 libSystem.B.dylib 0x959e3dbe _semwait_signalnocancel + 10
1 libSystem.B.dylib 0x959d5c87 usleep$NOCANCEL$UNIX2003 + 61
2 libSystem.B.dylib 0x959f7434 __abort + 109
3 libSystem.B.dylib 0x959f7490 flockfile_debugstub + 0
4 DirectoryService 0x00088ad7 CCachePlugin::WaitForDNSQueries(int, sDNSLookup*, opaque_pthread_mutext*, opaque_pthread_condt*) + 417
5 DirectoryService 0x00088ea5 CCachePlugin::IssueParallelDNSQueries(sDNSLookup*) + 613
6 DirectoryService 0x00088ff7 CCachePlugin::InitiateDNSQuery(sDNSLookup*, bool) + 65
7 DirectoryService 0x00090934 CCachePlugin::DSgethostbyname_int(char*, char const*, char const*, int, bool, sDNSLookup*, int*) + 1276
8 DirectoryService 0x00092d92 CCachePlugin::DSgetaddrinfo(kvbuf_t*, int) + 3448
9 DirectoryService 0x00094700 CCachePlugin::ProcessLookupRequest(int, char*, int, int) + 614
10 DirectoryService 0x0002e859 libinfoDSmigdoQuery + 585
11 DirectoryService 0x0009921c _XQuery + 343
12 DirectoryService 0x00098f79 DSlibinfoMIG_server + 109
13 libSystem.B.dylib 0x95977ed3 machmsgserver + 343
14 DirectoryService 0x00022ca1 CMigHandlerThread::ThreadMain() + 303
15 ...ectoryServiceCore.Framework 0x00166f83 DSCThread::Run() + 39
16 ...ectoryServiceCore.Framework 0x0016718e DSLThread::_RunWrapper(void*) + 84
17 libSystem.B.dylib 0x959336f5 pthreadstart + 321
18 libSystem.B.dylib 0x959335b2 thread_start + 34
Thread 2:
0 libSystem.B.dylib 0x95932f66 kevent + 10
1 libSystem.B.dylib 0x959336f5 pthreadstart + 321
2 libSystem.B.dylib 0x959335b2 thread_start + 34
Thread 3:
0 libSystem.B.dylib 0x959451d5 syscall + 5
1 ...ectoryServiceCore.Framework 0x00166f83 DSCThread::Run() + 39
2 ...ectoryServiceCore.Framework 0x0016718e DSLThread::_RunWrapper(void*) + 84
3 libSystem.B.dylib 0x959336f5 pthreadstart + 321
4 libSystem.B.dylib 0x959335b2 thread_start + 34
Thread 4:
0 libSystem.B.dylib 0x959024a6 machmsgtrap + 10
1 libSystem.B.dylib 0x95909c9c mach_msg + 72
2 libSystem.B.dylib 0x9592d47c vm_allocate + 135
3 libSystem.B.dylib 0x9595fd7f machmsg_serveronce + 252
4 DirectoryService 0x00022c14 CMigHandlerThread::ThreadMain() + 162
5 ...ectoryServiceCore.Framework 0x00166f83 DSCThread::Run() + 39
6 ...ectoryServiceCore.Framework 0x0016718e DSLThread::_RunWrapper(void*) + 84
7 libSystem.B.dylib 0x959336f5 pthreadstart + 321
8 libSystem.B.dylib 0x959335b2 thread_start + 34
Thread 5:
0 libSystem.B.dylib 0x95932f66 kevent + 10
1 libresolv.9.dylib 0x90f0f9f8 pdnsquery + 96
2 libresolv.9.dylib 0x90f0fd8c sdnssearch + 770
3 libresolv.9.dylib 0x90f0ff26 sdnssearch + 1180
4 libresolv.9.dylib 0x90f14363 dnslookup_soamin + 215
5 DirectoryService 0x000ce728 idnadnslookup + 572
6 DirectoryService 0x0008856c DoDNSQuery(void*) + 214
7 libSystem.B.dylib 0x959336f5 pthreadstart + 321
8 libSystem.B.dylib 0x959335b2 thread_start + 34
Thread 1 crashed with X86 Thread State (32-bit):
eax: 0x0000003c ebx: 0x959e390f ecx: 0xb01015fc edx: 0x959e3dbe
edi: 0x00224b90 esi: 0xb0101658 ebp: 0xb0101638 esp: 0xb01015fc
ss: 0x0000001f efl: 0x00000247 eip: 0x959e3dbe cs: 0x00000007
ds: 0x0000001f es: 0x0000001f fs: 0x0000001f gs: 0x00000037
cr2: 0xa06b88bc
Binary Images:
0x1000 - 0x10efef +DirectoryService ??? (???) <215b796060460ede1cfd684790280582> /usr/sbin/DirectoryService
0x15f000 - 0x16dff3 com.apple.DirectoryServiceCore.Framework 3.5.4 (3.5.4) <bb75c970bee1da9e8b00a0a3ce2cae45> /System/Library/PrivateFrameworks/DirectoryServiceCore.framework/Versions/A/Dir ectoryServiceCore
0x8fe00000 - 0x8fe2da53 dyld 96.2 (???) <14ac3b684fa5a31932fa89c4bba7a29b> /usr/lib/dyld
0x90c14000 - 0x90c1bfe9 libgcc_s.1.dylib ??? (???) <f53c808e87d1184c0f9df63aef53ce0b> /usr/lib/libgcc_s.1.dylib
0x90c1c000 - 0x90cceffb libcrypto.0.9.7.dylib ??? (???) <330b0e48e67faffc8c22dfc069ca7a47> /usr/lib/libcrypto.0.9.7.dylib
0x90d0e000 - 0x90d90ff3 com.apple.CFNetwork 330.4 (330.4) <ce5b085df34a78b7f198aff9db5b52ec> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CFNetwo rk.framework/Versions/A/CFNetwork
0x90f0e000 - 0x90f2cfff libresolv.9.dylib ??? (???) <9602435a6eac87a0d1f41b8ca8541693> /usr/lib/libresolv.9.dylib
0x924cc000 - 0x92557fff com.apple.framework.IOKit 1.5.1 (???) <60cfc4b175c4ef60bb8e9036716a29f4> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x925cb000 - 0x92846fe7 com.apple.Foundation 6.5.5 (677.19) <bfd4ebea1a7739dd6b523f15dca01a37> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
0x93387000 - 0x933abfff libxslt.1.dylib ??? (???) <4933ddc7f6618743197aadc85b33b5ab> /usr/lib/libxslt.1.dylib
0x933ac000 - 0x933f0feb com.apple.DirectoryService.PasswordServerFramework 3.0.3 (3.0.3) <8135bb4f34a3bf02b8c2ca869fe33a42> /System/Library/PrivateFrameworks/PasswordServer.framework/Versions/A/PasswordS erver
0x93703000 - 0x937e4ff7 libxml2.2.dylib ??? (???) <1baef3d4972ee789d8fa6c1fa44da45c> /usr/lib/libxml2.2.dylib
0x93f5e000 - 0x93f62fff libmathCommon.A.dylib ??? (???) /usr/lib/system/libmathCommon.A.dylib
0x9469a000 - 0x94726ff7 com.apple.LaunchServices 289.2 (289.2) <3577886e3a6d56ee3949850c4fde76c9> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchS ervices.framework/Versions/A/LaunchServices
0x9472c000 - 0x9473bfff libsasl2.2.dylib ??? (???) <b9e1ca0b6612e280b6cbea6df0eec5f6> /usr/lib/libsasl2.2.dylib
0x94805000 - 0x9484bfef com.apple.Metadata 10.5.2 (398.18) <9466e348fc3c1fece377ae1238fe74a7> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Metadat a.framework/Versions/A/Metadata
0x94867000 - 0x94917fff edu.mit.Kerberos 6.0.12 (6.0.12) <1dc515ebe407292db8e603938c72d4e8> /System/Library/Frameworks/Kerberos.framework/Versions/A/Kerberos
0x94c4f000 - 0x94c65fff com.apple.DictionaryServices 1.0.0 (1.0.0) <ad0aa0252e3323d182e17f50defe56fc> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Diction aryServices.framework/Versions/A/DictionaryServices
0x94d81000 - 0x94db3fff com.apple.LDAPFramework 1.4.4 (108) <00542ef6515aeb41a22ce0004a75b519> /System/Library/Frameworks/LDAP.framework/Versions/A/LDAP
0x94e49000 - 0x95123ff3 com.apple.CoreServices.CarbonCore 786.4 (786.4) <059c4803a7a95e3c1a95a332baeb1edf> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore
0x95458000 - 0x954d7ff5 com.apple.SearchKit 1.2.0 (1.2.0) <277b460da86bc222785159fe77e2e2ed> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/SearchK it.framework/Versions/A/SearchKit
0x95510000 - 0x95510ffa com.apple.CoreServices 32 (32) <2fcc8f3bd5bbfc000b476cad8e6a3dd2> /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices
0x95883000 - 0x9588bfff com.apple.DiskArbitration 2.2.1 (2.2.1) <75b0c8d8940a8a27816961dddcac8e0f> /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration
0x9588c000 - 0x958e9ffb libstdc++.6.dylib ??? (???) <04b812dcec670daa8b7d2852ab14be60> /usr/lib/libstdc++.6.dylib
0x95901000 - 0x95a61ff3 libSystem.B.dylib ??? (???) <98fc91f31f185411ddc46d3225e9af55> /usr/lib/libSystem.B.dylib
0x95b7f000 - 0x95c06ff7 libsqlite3.0.dylib ??? (???) <6978bbcca4277d6ae9f042beff643f7d> /usr/lib/libsqlite3.0.dylib
0x95c58000 - 0x95c87fe3 com.apple.AE 402.2 (402.2) <e01596187e91af5d48653920017b8c8e> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/AE.fram ework/Versions/A/AE
0x95c88000 - 0x95e56fff com.apple.security 5.0.4 (34102) <f01d6cbd6a0f24f6c13952ed448e77d6> /System/Library/Frameworks/Security.framework/Versions/A/Security
0x95e57000 - 0x95f36fff libobjc.A.dylib ??? (???) <a53206274b6c2d42691f677863f379ae> /usr/lib/libobjc.A.dylib
0x96018000 - 0x960d2fe3 com.apple.CoreServices.OSServices 226.5 (226.5) <7e10d25c615a39fe1ab4d48e24a3b555> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/OSServi ces.framework/Versions/A/OSServices
0x960d3000 - 0x960f7feb libssl.0.9.7.dylib ??? (???) <acee7fc534674498dcac211318aa23e8> /usr/lib/libssl.0.9.7.dylib
0x964d9000 - 0x96510fff com.apple.SystemConfiguration 1.9.2 (1.9.2) <8b26ebf26a009a098484f1ed01ec499c> /System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfi guration
0x9663b000 - 0x96642ffe libbsm.dylib ??? (???) <d25c63378a5029648ffd4b4669be31bf> /usr/lib/libbsm.dylib
0x96643000 - 0x9677bff7 libicucore.A.dylib ??? (???) <5031226ea28b371d8dfdbb32acfb48b5> /usr/lib/libicucore.A.dylib
0x9677c000 - 0x9678affd libz.1.dylib ??? (???) <5ddd8539ae2ebfd8e7cc1c57525385c7> /usr/lib/libz.1.dylib
0x9704e000 - 0x97180fff com.apple.CoreFoundation 6.5.3 (476.14) <7ef7f5db09ff6dd0135a6165872803cc> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x971c1000 - 0x971ecfe7 libauto.dylib ??? (???) <42d8422dc23a18071869fdf7b5d8fab5> /usr/lib/libauto.dylib
0xfffe8000 - 0xfffebfff libobjc.A.dylib ??? (???) /usr/lib/libobjc.A.dylib
0xffff0000 - 0xffff1780 libSystem.B.dylib ??? (???) /usr/lib/libSystem.B.dylib

64 bit and the iMac 24", 3.06GHz Intel Core 2 Duo, 4GB memory

Hello,
I am confused about the whole 32 bit 64 bit situation
I have installed Snow leopard on my new iMac 24", 3.06GHz Intel Core 2 Duo, 4GB memory.
Can this machine run 64bit? I thought it was a 32 bit machine.
Any clarification would be greatly appreciated.

Most Apple application run in 64 bit mode no matter what. Third party apps will if they are designed to. The unix kernel defaults to 32 bit mode for compatibility reasons. You can switch it to 64 if you like. I tried it and lost my Kensington mouse driver. Switching back to 32 brought it back. There is very little reason a normal user would need to run in 64 bit mode... but dangit I WANT to! Sadly my extra mouse buttons are more important...

I have an iMac 17" 1.83ghz intel core from 2006. I need to reformat the hard drive. Which system do I install - the system disk in came with or can I install 10.6.8 which is what it's running now. And does the system have to be for an iMac?

I have an iMac 17" 1.83ghz intel core from 2006. I need to reformat the hard drive. Which system do I reinstall - the system disk in came with or can I install 10.6.8 which is what it's running now. And does the system have to be for an iMac?

Reformat usiing the original install disc then update to v10.6.8.
Mac OS X 10.6: Reinstalling Mac OS X

Is my imac with processor 2.4 GHz Intel core 2 duo with memory 1gb 667 MHz DDR2 SDRAM compatible with lion????, is my imac with processor 2.4 GHz Intel core 2 duo with memory 1gb 667 MHz DDR2 SDRAM compatible with lion????

is my imac with processor 2.4 GHz Intel core 2 duo with memory 1gb 667 MHz DDR2 SDRAM compatible with lion????, is my imac with processor 2.4 GHz Intel core 2 duo with memory 1gb 667 MHz DDR2 SDRAM compatible with lion????

According to the Lion webpage, you would need to add more RAM to your computer and check to make sure you have about 7GB of free hard drive space.
The page can be found here if you need more info:
http://www.apple.com/macosx/specs.html

I have an iMac OS X ver 10.7.5. Processor speed is 3.06 GHz intel core i3, and the memory is 4 GB 1333 MHz RAM. My online banking app is being updated and requires OS ver 10.8 or newer. When I ask for available updates, the system says there are n

I have an iMac OS X ver 10.7.5. Processor speed is 3.06 GHz intel core i3, and the memory is 4 GB 1333 MHz RAM. My online banking app is being updated and requires OS ver 10.8 or newer. When I ask for available updates, the system says there are none available. How can I update my system to ver 10.8 or newer to accommodate the new banking app?

You can update directly to Yosemite (for free) through the App Store (this is 10.10). Make sure your existing applications will run on this OS.
If you wish to stay at 10.8, you can order this through the online Apple Store (it's $20), and they will email you a redemption code to be used on the App Store.
http://store.apple.com/us/product/D6377Z/A/os-x-mountain-lion
Matt

Intel iMac Noise Issues?

I am considering the new iMac Intel Core Duo. My brother has the original iMac G5 and has always complained about how loud it is with fan noise (and it is loud!). I was curious if the Intel iMac has removed this issue? I've seen them at the Apple Store here in San Francisco, but in the retail environment of that large space there is no way for me to know what it would sound like sitting in my home.
Thanks for the feedback ...

From all reports it would seem that Apple has corrected whatever caused all the noise in the first gen and ALS model G5 iMacs.

My Intel iMac with 4 ext, daisy chained drives freezes up sometimes. If I unplug all drives there is no problem. Also Disk Warrior gives me the error msg,that in Time Machine, (which is on a lg. (1TB ext. HD) error msg me that there is not enough memory

My Intel iMac with 4 ext daisy chained drives freezes up sometimes. If I unplug all drives there is no problem. Also Disk Warrior gives me the error msg (2154) that in Time Machine, (which is on a lg.(1TB ext. HD only 1/4 used space) error msg me that there is not enough memory. I am using Lion 10.7.2.

My Intel iMac with 4 ext daisy chained drives freezes up sometimes. If I unplug all drives there is no problem. Also Disk Warrior gives me the error msg (2154) that in Time Machine, (which is on a lg.(1TB ext. HD only 1/4 used space) error msg me that there is not enough memory. I am using Lion 10.7.2.

Has anyone experience iMac memory issues with One Drive (previously Sky Drive) - uses 5GB of my 8GB memory!

I recently started experiencing memory issues with my iMac due to One Drive using up to 5GB of my iMac memory (total of 8GB). Every time I start up my iMac Activity Monitor shows One Drive uses around 4-5Gb of the internal memory for no reason. Previously Onde Drive seemed to work fine, it's only since about 2 weeks I notice this. It's really annoying as the iMac freezes up regulalrly and I need One Drive to synchronise my files across different devices.
Has anyone experienced this too and are there any known fixes?

Yes this is happening to me too, since the last upgrade. Eventually MacOS starts insisting I "Force Quit" all my applications as I have run out of application memory.
OneDrive doesn't appear in that list because it's not an application... but Activity Monotor clearly shows it's the culprit, taking up 5GB+ of RAM.
I've raised the issue on Microsoft's forums:
http://answers.microsoft.com/en-us/onedrive/forum/sdperformance-sdother/onedrive -for-macos-memory-leak/fe04cf60-949f-47b6-b886-10539b5c5cc3?tm=1397636232934

Intel iMac 17" 1.83Ghz Memory Issue

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