Mosaic and Freezing in Alu iMac

Hello, guys:
My alu iMac (20' 2.4GHz, OS 10.15.1) occasionally got a short mosaic bend. Log out the current user and log in again. It disappears. Has anybody got this problem? See the picture:
http://www.Photo-Host.org/img/523127_11-45-59.jpeg
Also my iMac frequently got freezing these days. In the forum a lot of people got this problem. It seems no solution so for. is it due to hardware failure or only a problem from the update? what is Apple doing? Don't let us disappointed.

http://discussions.apple.com/thread.jspa?messageID=6309797#6309797
I think this is the same issue?

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After a recent software update my iphoto program no longer responds and freezes the my imac

After a recent software update I opened iphoto and was asked if I would like my photos geographic location used for mapping where photos were taken, I answered no and now Iphoto no longer responds and freezes all computer functions. Unable to force quite application. What can I do?

This is iPhoto for iOS, not OSX. Despite having the same name, they are completely different programs. You should repost your question in the iLife/iPhoto area.

Green Screen and Freezing on G3 iMac CRT

Hi - My son's Snow Slot Load 500mxh G3 iMac has recently developed some problems. It happened not long after updating to Tiger but seems not to be related to that. I installed the firmware upgrade before updating and the install went fine. It was working fine for a few weeks but started freezing up at random times requiring the power button to be held to restart. It would then restart and work fine but over the last couple weeks, the freeze ups have become so frequent that it's basically not worth bothering with. The freeze ups seem to have some sort of mechanical aspect to them - there is an actual flash or flicker or surge type thing as if the power was interupted. I have plugged the iMac into different power sources, etc. to be sure that it isn't somehow something in the houses wiring but that has not effect. In addition, in the last week or so, the screen has taken on a pronounced green cast. At first this problem was intermitent but now is pretty much permanent (it did come on once properly) It still works fine in terms of resolution, positioning, etc., no weird artifacts, just green. Both of the problems persist even if the iMac is started in OS9 or from a CD. I ran the Apple Hardware Diag CD and it gave a clean bill of health on everything....hmmm!
My guess is that it is a hardware problem and the obvious choice would be the video board. I don't want to put it out to pasture since it works great for my son but I also don't want to put bunches of time and $$$ into it swapping out different boards to try to figure the problem. Does anyone know any fairly definitive tests to determine if it is the Video board or, if not, what it is?
Thanks in advace for any help.
iMac G3 Mac OS X (10.4.9) Slot Load CRT 500mzh Snow

both the CRT and at least the High Voltage section of the PAV are likely bad. Right?<</div>
No only the PAV sounds like it's going bad. The fact that the CRT lights up means that it's good. The silver box on the back of the CRT that Apple refers to as the Video Board is part of the PAV. In fact when you replace the PAV you want to keep that same Video Board with the CRT so it involves cutting and splicing of 2 wires.
Let the HV on the PAV die and use an external Monitor<</div>
Most likely it's the flyback transformer on the PAV that is going and when that goes it's usually it's the Anode section that dies.
If I go with one of the options using an external Monitor, do I need to disconnect the internal CRT? I mean, I know that I don't have to disconnect the internal CRT to use an external Monitor but would it be better to?<</div>
Well if the Anode section dies then mute point because the HV will be gone anyway.
Replace the PAV, use an external Monitor<</div>
If you replace the PAV (deadly voltages involved! Also working PAVs are hard to come by) you wouldn't need an external monitor because the internal one would then work. My son has a 700 Snow that I dropped a DVD-ROM from a 500 Graphite into. Had to use Pacifist to get it to work. Hooked up an external LCD. Now he's watching Pirates II in stereo. He also uses it for Garage Band.
R

IMac loudly whirs and freezes. please help!

I have a 27" iMac purchased November 2009. Have tried searching discussions for help but am unsure what to call the problem as it is so peculiar!
Several times an hour it makes a strange loud whirring noise (which does not appear to be a fan to me as it is not a smooth sound, sounds more like a hard drive 'thinking' possibly?? but I have no idea) and freezes until the noise stops (which generally takes anywhere between 10-30 seconds). Very frustrating as it interupts my workflow and all I can do is wait it out. It does not seem to matter how many/which applications are running. it happens when i have creative suite open but then it also happens if all i have open is chrome!
It is within warranty, however I have no time to take it to be fixed until November as I can't be without it until then, so am hoping someone will have a suggestion to help me out!
I don't know what other information would be helpful, but just in case, it has 4GB of RAM and has a 3.06 GHz Intel Core 2 Duo processor and still has about 775GB of hard drive space free.
would doing a fresh install of my OS help?
any advice you can give me would be appreciated! or point me towards an existing discussion (all i could find were people describing their whirring noise as a buzzing, and mine is definitely not buzzing)

My first thought would be the hard drive, you may not have time to get it check out until November
but think about what you might loose if you don't. Just have a great backup plan for a just
incase scenario
If its not a harddrive, what ever you have going on is not good, as your aware of, you need to
reevaluate and think about if you lost what you have verses not having access to your files.
I assume you have contacted Apple support on the phone, to see what they might have to say
Its nothing to fool with in my opinion
Mike

Imac slow and Freezes PLEASE HELP!

PLEASE HELP!!!
Hello i have and imac G5 i bought it in about june of 2005...
It was running very slow and always freezing and then i upgraded the RAM to 1gb
and it started working much better. then i upgraded to OS Leopard andalso pro tools LE 7.4
and since then has been performing slow and freezing all the time. ai recently added another gig of RAM just to see if that was the problem , but it seems to be working just as slow. Does anybody know what it might be. Its a 1.6 GHZ power PC G5 and has a 80GB HD and have about 20 GB free so i dont think thats it. Please let me know if any of you have had this problem or know how to fix it thanks

Except for the keyboard & mouse, disconnect all devices from your computer.
Repair your disk from your System DVD.
Repairing permissions from the Tiger or Leopard DVD
Boot up from your Tiger or Leopard Install DVD while holding down the "c" key.
Select the language you wish to use, and then choose "Disk Utility" from the menu bar.
Your HD should appear in a panel on the left hand side of the window which opens. Select it and then click on the "repair disk" button in the right hand section of the window.
If Disk First aid is able to complete the repair now click on the "Repair permissions" button.
Once this process has been completed restart your computer.
===============
Get a larger HD
===============
Use Software Update to update your OS to OS 10.5.6.
Afterwards, repair permissions & restart your computer.
Your system info confirms you are still using an outdated version - OS 10.5.4.

New 27 iMAC keeps crashing iMovie and freezing videos on YouTube & Quicktime

We just got a new Sept 2013 iMac three days ago, purchased refurbished from the Apple Store online. The whole point of the purchase was to be able to use iMovie to thoroughly edit videos for our YouTube channel, use garage band, lots of internet surfing and video watching etc. We spent the extra dollars to get what we thought was the most improved version of the iMac with all the souped up specs in order to avoid any hassle and headaches from a lack of performance. Here's what we have:
3.4GHz quad-core Intel Core i7
27-inch (diagonal) LED-backlit display with IPS technology; 2560-by-1440 resolution
8GB (two 4GB) of 1600MHz DDR3 SDRAM
1TB hard drive (We have only used 80 GBs of it so far, so plenty of space left)
NVIDIA GeForce GTX 775M graphics processor with 2GB of GDDR5 memory
720p Camera & Mic
OS X 10.9
We're feeling a bit duped now as this seems to have turned out to just be a big expensive piece of junk. Here are our problems:
- Firstly, thank goodness that we had our own Logitech HD camera/mic left over from our PC because the "HD camera" built in to the iMac is worse in quality than my old blackberry curve. Grainy, lack luster, mic has sharp and distant sound, really really bad and false advertisement.
- In the middle of using iMovie (iMac came preinstalled with the newest one, i think its 10?), it will stop responding properly or will crash and close, we wont even have any other programs running.
- When opening Quicktime to record a new video, in the middle of a recording or while the recording window is idle, it will start glitching - flashing between live footage and a freeze frame repeatedly. The only way to stop it is to quit out Quicktime and open again and try to record quickly, or in some cases we have to completely restart the iMac, which then still randomly in the middle of a recording or idle window it will continue to flash and glitch. (You can view an example here in the last minute of one of our videos, we tried to make it work and kept the take since we were doing our outro music dance, but it totally ***** when this happens randomly during our content portion and we have to redo recording. http://youtu.be/MAJzaEShJGw?t=4m34s )
- When watching YouTube videos, the computer takes a while to respond to a command, like if we click on a certain part of the video, it will not load it until we press the pause/play button a few times and wait. Also at the beginning of a video it will start glitching and freezing again, similar to how we explained above in the quicktime, but faster.
If you are familiar with what could be the problem or have any advice, PLEASE HELP, we are concerned that after dropping so much money within just 3 days of use, this iMac is not performing flawlessly in the areas that we most needed and want to know if these issues are common and fixable or if its a defect that would require we send this thing back immediately. We did not get apple care and would hate to have wasted money that we really dont have on a glitchy crashing huge piece of junk.
Want to mention a few other pros and cons unrelated to our issues, for those who may be considering buying one too:
PROS:
- The Magic mouse is really great, particularly because of the scrolling and zooming gestures. (Though sometimes i accidentaly swipe in a browser and go back to a previous page losing any information that was input on the page i was originally on, for example, i had to retype this whole apple imac inquiry because i swiped backwards by mistake and the whole form cleared! annoying, wish the horizontal swipe navigated between tabs instead of going through the page view history.)
- When the imovie is not crashing, after watching some tutorials and making a few vids, its a really greatly improved program from the '09 version we used to use. I import and edit videos much faster now, and footage does not freeze or take time to load while im dragging and dropping, it is immediately responsive.
- Love using the Talk to text function (like Siri) by pressing "fn" twice. Use this to write long emails and papers with ease. Would like to see a "Speak" read back option that allows for text to be selected and read back (like Siri on iPad)
CONS:
- The text is SO small everywhere and there is no option to exactly set text size across the whole system, only option given is to set a different resolution which lessens the quality of the screen with pixelation, and some programs give you the option to set custom sized text in their individual preferences.
- Sometimes in both iMovie & Garageband, simple automated functionality will stop working, for example in iMove, when certain screens or images are dragged and dropped to the work area by the activity bar (i dont know what else to call it, the line that rolls across during playback or stays put when pressing spacebar) usually, that screen or image will click into place to align with the activity bar and will highlight the bar yellow to further communicate that alignment before you drop it, but after extended use in a session, that snapping into alignment when adding items stops working. Or sometimes you can drag and drop the ends of a title screen to adjust/trim the clip, but after extended time that too stops responding and does not let the cursor turn into that arrow that allows you to trim or extend, until after many frustrated clicks or a quit and restart.
- When sharing/exporting a video from iMovie, i would recommend unchecking the add to theatre option because it significantly extends the amount of time needed to complete the action and i found out the theatre is just like a video stream of your movies to be shared on icloud for easy access from your other devices (similar to the icloud photostream connected to iPhoto). It takes the time to make the video readily availabe in various sizes on the Mac server for easy access, which means it takes forever for your video to be exported to where you actually want it. This is not something we need and is not worth the wait time. (For example, last ime we left the theatre box checked, the progress status of the video was estimated to be completed in 351 minutes, and then 20 minutes later that somehow inclreased to 385 minutes, then duddenly it was done, so i think this add to theatre option also cause the progress status updates to go berzerk.)

Given the maximum RAM that model can use is 32GB, and the earlier release of that 27" mid-2013 iMac is nearly the same in most regards, you may note the listing of this slightly older iMac 27" is here in an Apple support document...
•iMac: How to remove or install memory:
http://support.apple.com/kb/HT1423
http://support.apple.com/kb/HT1423#1
The images of where the RAM chips are located, behind a metal plate, should be similar in your iMac and the mid-2013 iMac 27" shown in images on that page. Note there are several models discussed.
You could take the computer to a certified Apple service facility (retail store, or specialist reseller) and pay them to do this, and buy the RAM from them, and you will pay for this at a retail level. If they do it, you'd want to be assured the computer did all the things you sought to cure by upgrading RAM, correctly without fault. Like run tests and stuff.... Or there's no reason to not go ahead (after confirming from Apple) that you could buy quality RAM and do this job yourself, citing the Apple page link I'd posted above.
Contact Apple Support:
http://www.apple.com/support/contact/
You'd have to obtain the correct RAM (as indicated in my earlier post, citing MacTracker) of suitable quality for use in a Macintosh computer, and the recommendation for a DIY is to get the kit from 'Other World Computing' OWC online at their site. You can talk to knowledgable sales staff at OWC about what you have and what you need, and to help they may ask for the product serial number.
This is OWC and they have the spec RAM required for your iMac 27" model; double-check info:
http://eshop.macsales.com/shop/memory/iMac/2012_27/DDR3L
Since yours is an Apple Refurbished model it will have a different number series. Unlike those in a retail store, because Apple does that to tell what ones they refurbished; refurbs I bought online were like that.
With questions during the first three months, you can get 'support' under the initial 90-day span of ownership of the new (and certified) Apple refurbs bought online; the other part of that is 'service' for 1 year. Call a nearest retail Apple Store, to set a genius appointment; or go online, and start the process of reporting your issue, while you still have some kind of warranty on the device. They can diagnose the issues you cite and tell you if you can upgrade the RAM (as you likely can) then you can buy and install the RAM yourself and probably pay less than 1/2 the retail rate, if you get some from OWC. A diagnosis is free if the Genius looks into it, but you'd need to set an appointment & lug the iMac to their store; protected from weather/shock.
If you want to extend the complementary service to three years (less the included 90-days) and add two years of AppleCare service, that is an affordable option of about $170. For a total of three years coverage.
{If you had a 21.5-inch iMac the RAM would require a service department visit where they use a different method to install the RAM upgrade. Those are built differently than the 27-inch iMac.}
There is a bit of detailed important information in the Apple link on how to upgrade the iMac RAM. There is a certain amount of RAM installed already and these chips would likely be removed if you get matching sets of new RAM to upgrade the capacity. And no matter what some say, there is a reason why they can be upgraded with more. Even with Mavericks OS X 10.9.x and its 'memory compression' etc, it would gladly accept all the RAM upgrade chips it could swallow. (Behind metal screen, mid-bottom iMac 27")
You may need to consider questions about applications that use system resources separate from those about whatever issues your iMac seems to exhibit. There may be some other cause of the video and iMovie symptoms, but more RAM won't hurt given the beast you bought can use 32GB and it has 8.
And if it seems too much to handle, you have 14 days from date of
purchase to take it back. Contact them ahead of then, if you do.
Hopefully this helps.
Good luck & happy computing!

My iPhoto starts up and freezes. I have tried rebuilding and using iPhoto Library Manager. I have an iMac running 10.7.3. It was working before recent updates by Apple. How can I troubleshoot?

My iPhoto starts up and freezes. I have tried rebuilding and using iPhoto Library Manager. I have an iMac running 10.7.3. It was working before recent updates by Apple. How can I troubleshoot?

Thank you. Might be a bit more than 50 but close.
Date/Time:       2012-04-09 12:46:07 -0400
OS Version:      10.7.3 (Build 11D50d)
Architecture:    x86_64
Report Version: 9
Command:         iPhoto
Path:            /Applications/iPhoto.app/Contents/MacOS/iPhoto
Version:         8.1.2 (8.1.2)
Build Version:   8
Project Name:    iPhotoProject
Source Version: 4240000
Parent:          launchd [142]
PID:             980
Event:           hang
Duration:        1.81s
Steps:           19 (100ms sampling interval)
Pageins:         0
Pageouts:        0
Process:         iPhoto [980]
Path:            /Applications/iPhoto.app/Contents/MacOS/iPhoto
Architecture:    i386
UID:             502
Thread 0x50630
User stack:
    19 ??? (in iPhoto) [0x3172]
      19 ??? (in iPhoto) [0x124b80]
        19 NSApplicationMain + 1054 (in AppKit) [0x9c5eb261]
          19 -[NSApplication run] + 911 (in AppKit) [0x9c357675]
            19 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 113 (in AppKit) [0x9c35b306]
              19 _DPSNextEvent + 678 (in AppKit) [0x9c35ba9c]
                19 BlockUntilNextEventMatchingListInMode + 88 (in HIToolbox) [0x90129356]
                  19 ReceiveNextEventCommon + 381 (in HIToolbox) [0x901294e7]
                    19 RunCurrentEventLoopInMode + 318 (in HIToolbox) [0x9012217f]
                      19 CFRunLoopRunInMode + 120 (in CoreFoundation) [0x99dce328]
                        19 CFRunLoopRunSpecific + 332 (in CoreFoundation) [0x99dce47c]
                          19 __CFRunLoopRun + 1112 (in CoreFoundation) [0x99dcec68]
                            19 __CFRunLoopDoSources0 + 246 (in CoreFoundation) [0x99da4d96]
                              19 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15 (in CoreFoundation) [0x99da53df]
                                19 __NSThreadPerformPerform + 503 (in Foundation) [0x9ac96e40]
                                  19 -[NSObject performSelector:withObject:] + 65 (in CoreFoundation) [0x99e2dde1]
                                    19 ??? (in iPhoto) [0x50792e]
                                      19 -[NSNotificationCenter postNotificationName:object:userInfo:] + 92 (in Foundation) [0x9ac45012]
                                        19 _CFXNotificationPost + 2776 (in CoreFoundation) [0x99de3a38]
                                          19 ___CFXNotificationPost_block_invoke_1 + 275 (in CoreFoundation) [0x99e18cb3]
                                            19 __-[NSNotificationCenter addObserver:selector:name:object:]_block_invoke_1 + 49 (in Foundation) [0x9ac59e25]
                                              19 ??? (in iPhoto) [0x5c2a86]
                                                19 -[NSLock lock] + 185 (in Foundation) [0x9ac4c826]
                                                  19 __psynch_mutexwait + 10 (in libsystem_kernel.dylib) [0x93b74876]
Kernel stack:
    19 hndl_unix_scall + 281 (in mach_kernel) [0xffffff80002d7f39]
      19 unix_syscall + 472 (in mach_kernel) [0xffffff80005ca448]
        19 psynch_mutexwait + 1403 (in mach_kernel) [0xffffff80005a043b]
          19 ksyn_block_thread_locked + 67 (in mach_kernel) [0xffffff800059a7d3]
            19 thread_block_reason + 299 (in mach_kernel) [0xffffff800022f39b]
              19 thread_continue + 1661 (in mach_kernel) [0xffffff800022f11d]
                19 machine_switch_context + 361 (in mach_kernel) [0xffffff80002c0939]

Imac keep crashing and freezing up when I open browsers and program

Hi, I have some problems for my Imac. I don't know why when I open my browsers and some program keep crashing and freezing up.
Any one can help this problem? Or should I follow any step can solve this problem? Thanks a lot!
Zack

Reinstalling Lion Without Erasing the Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion: Select Reinstall Lion and click on the Continue button.
Note: You can also re-download the Lion installer by opening the App Store application. Hold down the OPTION key and click on the Purchases icon in the toolbar. You should now see an active Install button to the right of your Lion purchase entry. There are situations in which this will not work. For example, if you are already booted into the Lion you originally purchased with your Apple ID or if an instance of the Lion installer is located anywhere on your computer.

IMac making loud beeps and freezes. Only way to shut down is hold power button. Any ideas what might be wrong?

iMac making loud beeps and freezes. Only way to shut down is hold power button. Any ideas what might be wrong?

iMac making loud beeps
Could be the RAM (memory)
Power On Self-Test Beep Definition - Part 2

My imac screen works fine but it keeps flikering and freezing whats wrong with it

my imac screen works fine but it keeps flikering and freezing whats wrong with it? theres no crack or problem with it it just freeze's ande flikers

It sounds as if your graphics chip (on the logic board) is failing. The other answer could be that your screen is not well, but I lean more towards the graphics chip. If you have Apple care or are still under warranty, call Apple.

IMac G5 PowerPC boots up and freezes at light-blue screen

PowerPC G5 20" iMac, 2.0GHz, +260 GB harddrive, 2 GB of DDR SDRAM
Leopard OS 10.5.6
Computer starts up and freezes at light-blue screen. Mouse still moves, bu no keyboard commands work. Only holding the power button will shut down the computer.
Tried the following:
- Able to boot into Safe-mode only.
- Ran OS Disk Utility to repair permissions and also MacTuneUp 3.6.0, and no change
- Tried changing start-up to boot from OS 10.5.6 DVD and still freezes with light-blue screen. Safe-mode allowed me to run Disk Utility but no difference.
- If I leave the frozen light-blue screen, eventually the iMac power-saving mode darkens the screen, until I move the mouse (then light-blue again and still frozen).
- I left my iPhone connected to the iMac, and when starting up the computer the iPhone started charging. When the light blue screen froze the iPhone stopped charging.
- tried starting computer with Options + Command keys
- tried + Options-Command-P-R untill you hear two beeps: Reset NVRAM (restart 3x)
- tried Resetting the SMU > Unplug all cables from the computer, including the power cord. > Wait 10 seconds.> Plug in the power cord while simultaneously pressing and holding the power button on the back of the computer. > Let go of the power button. > Press the power button once more to start up your iMac.
Questions:
> When booting from OS 10.5.6 DVD, Should I run Time Machine Restore system from Backup?
> I can work fine in Safe-mode all day, but limited resources. Is this a software or hardware issue?

Based on what you have you tried I would guess it is hardware problem.
First iMac's without camera and with GeForce FX 5200 graphics card are known of having capacitor failures which can cause the machine either to become unstable in different situations or fail to boot up at all. I have repaired many of them and changing capacitors brought completedly dead iMac (no power, no nothing) up to life so capacitors mean a lot.
Second and third it's mainly the graphics card which fails, causing the machine to fail to boot, become unstable or boot with artifact patterns in picture.
There has also been power supply issues and Apple did issue a recall back then, I think you can still find article about it and check if your machine has serial number which fits to that recall problem. This way you could check if you should suspect power supply going bad.
Capacitor problem is usually easy to identify (open up the case and look if those can-like things are bulging or swollen) and quite easy to repair if you have bit experience in computers and soldering, iFixit.com provides great disassembly instructions. Graphics card problem is harder to identify because in that case it is the solder which breaks under the graphic chip so you cannot actually see the defect. It is also harder to repair atleast if you want the machine to work long time after that repair. Basically you would need to heat the GPU enough to reflow solder connections.
Because the machine can boot into safe mode I'm suspecting that you have some of these issues I described, safe mode does not utilize hardware at full power and disable full graphics acceleration for example.

IMac picture pixilated and freezes up on start up.

When I start my iMac it seems to start ok at first, then the screen gets pixilated and freezes up. Some times I can get further in the start up process than others. I did just update to OS 10.10.3.
Mac (21.5-inch, Late 2009)
3.3GHz Intel Core 2 Duo
8GH Memory
Processor Name: I
Number of Processors: 1
Total Number of Cores: 2
L2 Cache: 6 MB
Memory: 8 GB
Bus Speed: 1.33 GHz

I had to make an OS 10.10.3 Start Up Disk and reboot using that. I checked the disk for any damage then restored from Time Machine Back up. Seems to be working better.

My iMac beeps and freezes

I will be using it and it randomly will stop and freeze than beep three times the only way to stop it is a hard boot up unplugging it only works I had upgraded the ram to the max that a 27 inch 2011 model will take I believe 16 gb

Can you count the beeps or flashes?
1 beep = no RAM installed
2 beeps = incompatible RAM types
3 beeps = no good banks
4 beeps = no good boot images in the boot ROM (and/or bad sys config block)
5 beeps = processor is not usable
In addition to the beeps, on some computers the power LED will flash a corresponding number of times plus one. The LED will repeat the sequence after approximately a 5-second pause. The tones are only played once.
Note: In this case, a flash is considered to be 1/4 second or 250 ms or greater in length.

How come most people think it's an isolated Alu iMac issues?

My old PC couldn't do what I needed it to do anymore so I desperately needed a new computer for my project. I was going to go Apple's London store and move a new Alu iMac home immediately, but before I did that I came to this forum ... And that's how thing started to become very complicated.
At first, I was shocked by the number of people complaining about this 'new iMac issues' - the faulty display and the freezing problem ... mostly, the freezing issue. Quite a few people believed it was caused by the 1.1 update and the ATI card. After a few days of my intense reading on this iMac forum, Apple issued a statement acknowledging the freezing issue.
I knew it would only be sensible if I waited until Apple solve the problem. The thing is: I just cannot afford to wait - I have to finish my project.
I stared looking at other options: Mac Pro, MacBook Pro, Mini .... and ... what I have found on this Apple forum, based on what other Mac owner's posts, none of these models is clear of the same problem - unexpected, continuios freezing problem!
Based on what I have read so far, the freezing problem is not exclusive of the
1: new Alu iMAc - some white iMAc, MacPro, MBP, Mini owners have reported the same issue.
2: Macs with ATI graphic card.
3: Macs have been updated to OS X 1.1
4: Macs have games installed
It's a large, wide spread issue than some people would believe, isn't it? To be honest, I have started looking at Dell desk top these two days ... but I just cannot imagine to spend any money for another PC - it should be my last solution.
I desperately needed an Mac for my project - it's a very important one. I am depressed by the situation I am facing now and don't really know what to do. Can anyone kindly offer me some advice?
Some of you might say: get a grip - it's only a computer ... and the freezing issue is not that serious ...
However, if you rely on the computer to get your work done, would you really go ahead and buy an iMac regardless what is going on. Otherwise, what else can I do? If I buy an iMac and only work under bootcam with Windows until Apple fix the freezing problem - will it be a solution?
If you were me, what would you do?
I will appreciate any input!

David,
I posted the same thing and was taken to task by some posters for stating it also. The truth is that gamers were the first to report this issue and did so in far larger numbers than other users. In fact, those who are or were reporting issues with Aperture or iTunes or other applications really didn't start posting in significant numbers about the issue until a few days after it surfaced.
I think many people didn't get a chance to read some of the first posts on the subject as many of them were removed, for cause, and some of them are a few pages back now and forgotten.
I too have had the problem but in my case I was able to solve it by removing the game that was causing it all the time, reformatting the drive, reinstalling, and then updating. That was a week ago and I have not had any freezes since, but I have had video artifacts a couple of times. When it does that I just save my work and restart. I have even managed to get through some iPhoto sessions without issue.
*To the Original poster:*
No one can tell you what you should or should not do but if you want a Mac, buy one. This problem is not as widespread as some would have you believe. If you base your opinion on what you read here you would come to the conclusion that everyone's iMac is sick, but that is not true. In my case of the three Intel iMacs that I have, only my 24" has the problem, the other two are just fine.
Even if 30% of them were/are bad, which is an absurdly high figure, you would still have a 70% chance of getting one with no issues!!
I also trust that Apple will find and solve the problem. After dealing with them for 20+ years that is what I have come to expect based on my past experiences with them.
Message was edited by: Al Van Malsen
Message was edited by: Al Van Malsen

20" Alu iMac Plunge..... Help Please

Hello all!
I'm new here but I have been reading these forums for a little while now.
I'm looking to buy a new 20" iMac.
From what I have read I can see that alot of the early shipments of the 20" have had screen problems. Some have sorted it with new colour profiles or correctly calibrating and then changing the gamma settings.
Has anyone been 20" happy out of the box? I read the "Anyone 20" Happy" thread and it didnt seem many were. Is there anyone happy?
The 24" version seems to have a FW800 problem. Is this also present on the 20"? As I will be using this alot!
The reason for switching to Mac is for the reliability. It seems this is the only reange that isnt that good at the moment. Shame.
Basically,
1. Anyone happy with their 20" screen?
2. If you are does it run properly? (no freezing or gaming problems)
3. Is there any firewire or usb promlems?
Thanks alot in advance as this will help me decide when to buy, now or later!
Thanks!!!
Message was edited by: Bokers

No problems at all. Good machine, professionell, fast.
The screen is a TN display but it's very sharp and bright. Photos look very good.
It's a good working machine. I must say I love it. I use it for music production under very heavy loads for hours (95% CPU load). No probs. No freezes, no panics.
FW isn't an issue: my FW-audio interface and my two FW-HDs (one older Westerndigital) are working perfectly together. No drop outs in audio.
Everything is fast and quiet with the iMac.
USB is perfect: I also have an EyeTV receiver in the USB which is very nice.
All my USB devices (Canon Printer, Ligitech Mouse, Midi-Interfaces, iPod, Camera) are recognized and working perfectly.
The only problem I have is Airport. It works good, strong and fast but after restart and sleep I have to click on my network to make it re-connect to my router. So no automatic connection at the moment.
I think this can be fixed by Apple and very much depends on the chip in the router (I have a "Fritzbox").
So when you're reading about problems in this forum you must know for ervry Mac with a problem here there are 95 Macs outside with no problems.

Mosaic and Freezing in Alu iMac

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