IMac (Early 2009) always wakes from sleep after Security Update 2010-001

I posted this already in the Snow Leopard section, but wasn't able to get a resolution to the problem:
http://discussions.apple.com/thread.jspa?threadID=2309613&tstart=0
I tried all the suggested things, but my iMac still always wakes from sleep and this never happened before the 2010-001 security update. I was asked to paste the console log entry from when this happens, so here it is:
28/01/2010 08:57:47 kernel Wake reason = OHC2
28/01/2010 08:57:47 kernel System Wake
28/01/2010 08:57:47 kernel Previous Sleep Cause: 5
28/01/2010 08:57:47 kernel USB (OHCI):Port 1 on bus 0x6 has remote wakeup from some device
I'm wondering if others have seen this and if so know of a solution. At the moment I'm stuck with having to shutdown my iMac every time I leave it. Thanks.

Here is a solution that should work:
1. Turn off all Bluetooth devices connected to your computer.
2. Make sure Bluetooth icon in the Menu Bar is black (BT is On) and BT is not connected to anything
3. Plug in a USB mouse
4. Go to System Preferences>Bluetooth>Advanced
5. The option to "Allow Bluetooth devices to wake this computer" should now be uncheckable>Uncheck it and click OK
6. Turn on your Bluetooth devices and let them connect to your Mac
7. Try and put your Mac to sleep and then wake with the power button
8. Check if the "Allow Bluetooth devices to wake this computer" option is still unchecked (it should be)
9. Try and restart your Mac and check again if the "Allow Bluetooth devices to wake this computer" option is still unchecked (I had mixed results with this test, depending on the type of the Mac being tested)
Anyhow, this way you should be able to uncheck the option that causes the issue and it should not get checked again by itself unless you restart your computer and maybe even after that. If it does get checked again after reboot, just get used to putting your Mac only to sleep until a fix from Apple is available or repeat the above process after every reboot if necessary.
Hope this helps.
Marian

Similar Messages

IMac wakes from sleep by itself after security update 2010-001

Since installing last weeks security update 2010-001, my iMac has suddenly started waking up when it should be asleep. Now I've had Auto Sleep problems with my iMac before, but this problem of finding my iMac running when I left it asleep started immediately after the update. Now, one thing additional I've notice since the update is that I often see the message on the screen "Keyboard Connected" when it always was or should have been and I wonder if this is related to my iMac waking up. Anyone else seen this problem since the update or have any ideas?

Thanks to you both for suggestions, but I still have the same problem after trying them and as I said in my title this only started after the 2010-001 security update. As a test I put my iMac to sleep at 13:35 and it woke up by itself at 13:46. Here is the console log below, does it help at all in finding the root cause?
23/01/2010 13:46:17 com.apple.usbmuxd[20] DeviceRequestAsync failed: 0xe0004057
23/01/2010 13:46:17 kernel Wake reason = OHC2
23/01/2010 13:46:17 kernel System Wake
23/01/2010 13:46:17 kernel Previous Sleep Cause: 5
23/01/2010 13:46:17 kernel USB (OHCI):Port 1 on bus 0x6 has remote wakeup from some device
23/01/2010 13:46:17 kernel en1: 802.11d country code set to 'X3'.
23/01/2010 13:46:17 kernel en1: Supported channels 1 2 3 4 5 6 7 8 9 10 11 12 13 36 40 44 48 52 56 60 64 100 104 108 112 116 120 124 128 132 136 140
23/01/2010 13:46:26 kernel NVEthernet::setLinkStatus - Valid but not Active
23/01/2010 13:46:26 kernel en1: 802.11d country code set to 'BE'.
23/01/2010 13:46:26 kernel en1: Supported channels 1 2 3 4 5 6 7 8 9 10 11 12 13 36 40 44 48 52 56 60 64 100 104 108 112 116 120 124 128 132 136 140
23/01/2010 13:46:26 kernel Auth result for: 00:19:70:24:4b:58 MAC AUTH succeeded
23/01/2010 13:46:26 kernel AirPort: Link Up on en1
23/01/2010 13:46:26 kernel AirPort: RSN handshake complete on en1
23/01/2010 13:46:26 kernel EIR is supported.
23/01/2010 13:46:26 kernel SSP is supported.
23/01/2010 13:46:26 kernel [09437000][BNBMouseDevice::startMultitouch][30] ERROR: Invalid attempt to re-start multitouch handler
23/01/2010 13:46:26 configd[13] network configuration changed.
23/01/2010 13:46:29 Firewall[52] Stealth Mode connection attempt to UDP 192.168.1.2:58867 from 192.168.1.1:1900
23/01/2010 13:46:29 Firewall[52] Stealth Mode connection attempt to UDP 192.168.1.2:58867 from 192.168.1.1:1900
23/01/2010 13:46:29 Firewall[52] Stealth Mode connection attempt to UDP 192.168.1.2:60944 from 192.168.1.1:53
23/01/2010 13:46:29 Firewall[52] Stealth Mode connection attempt to UDP 192.168.1.2:51633 from 192.168.1.1:53
23/01/2010 13:46:29 Firewall[52] Stealth Mode connection attempt to UDP 192.168.1.2:52391 from 192.168.1.1:53
23/01/2010 13:46:29 Firewall[52] Stealth Mode connection attempt to UDP 192.168.1.2:60944 from 192.168.1.1:53
23/01/2010 13:46:29 Firewall[52] Stealth Mode connection attempt to UDP 192.168.1.2:62159 from 192.168.1.1:53
23/01/2010 13:46:31 Firewall[52] Stealth Mode connection attempt to UDP 192.168.1.2:58867 from 192.168.1.1:1900
23/01/2010 13:46:31 Firewall[52] Stealth Mode connection attempt to UDP 192.168.1.2:58867 from 192.168.1.1:1900
23/01/2010 13:46:31 Firewall[52] Stealth Mode connection attempt to UDP 192.168.1.2:58867 from 192.168.1.1:1900
23/01/2010 13:46:33 Firewall[52] Stealth Mode connection attempt to UDP 192.168.1.2:61768 from 192.168.1.1:53
23/01/2010 13:46:47 Firewall[52] Stealth Mode connection attempt to UDP 192.168.1.2:65126 from 192.168.1.1:53
23/01/2010 13:47:20 Firewall[52] Stealth Mode connection attempt to UDP 192.168.1.2:64652 from 192.168.1.1:53

After Security Update 2010-001: Airport Card Not Detected

Currently running OS X 10.5.8 on a Mid 2009 MacBook Pro.
Here's the issue. When I boot up the machine and click the AirPort drop down it tells me that there is no airport card detected. Under system profiler it says the same thing. If I boot to a 10.6 Mac OS Install DVD and open system profiler, the AirPort card is detected. This occurred after a reboot prompted by the Security Update 2010-001.
So far I have repaired permissions and repaired disk. No fix.
I reset the PRAM/NVRAM and SMC. No fix.
I booted to an OS X image on an external drive. No fix.
I cannot boot to the Apple Hardware Test (D at startup) because my company requires PGP disk encryption. I could decrypt but this would take at least 6 hours (not counting re-encrypting afterwards).
I tried replacing the extensions. No fix.
There were no firmware updates applied or any other major OS updates.
Anyone have anything else I can attempt?

anyone else see that??
Yes, Already covered in full here. Strange but no problem.
http://discussions.apple.com/thread.jspa?threadID=2310982&tstart=15

BootCamp won't boot after security update 2010-001

I just installed the security update 2010-001 and my bootcamp partition is not booting anymore is stopping on a black screen with a white line (cursor), just before the splash screen of winxp.
Anybody else had the same problem?
Somebody can solve this?
Thanks

Sorry probably my question wasn't clear. I'll try to explain myself better. After installing security update 2010-001 the bootcamp doesn't boot anymore. If I try to boot it, it remains on the black screen and there is the flashing underscore. Please help me, I don't know what to do!
Thanks

Display no longer wakes from sleep after latest updates

G4 Quicksilver 933, nVidia Ti, 1.5GB, 20in Cinema Display
I applied the latest updates that were pushed out recently (10.5.2 and the "Leopard Graphics Update") and now my Apple display will not properly come up when I wake the box from suspend.
That is, it starts and runs fine, but if it goes into sleep, upon waking it will (sometimes) flash the contents of the desktop, and then go black. The litte green light is on. Happens from a logged in session, or from the main login screen.
I have to hit the reset or power button (or login via SSH and issue a shutdown) to get it to work again.
I only have a single monitor.
I tried:
o Powering the monitor off and on, both from the switch and by pulling the power cable
o Pulling the DVI cable and reinserting it
o Resetting NVRAM
o Re-applying both the 10.5.2 combo installer and the Leopard Graphics Update 1.0 in order
o Waving a magic wand... I mean, fixing permissions
o Changing the display resolution a few times
o Running fsck a few times (only because all these unclean shutdowns are making me nervous)
o Hitting the "Detect Displays" button in the Displays Prefs panel...
Aha! Hitting that button causes the display to flash and then go dark. I have to power cycle the unit to get the monitor to come up again.
I do have the special build option of the faster video adapter which was available all those years ago. It's quaint now, sure, but it was a fast card back then.
I'm stumped. It's surprising how something like this can turn a perfectly reasonable desktop into a boat anchor.
Message was edited by: John Verne

mjelacic wrote:
This Discussion is marked as Answered, but with my apologies to the other respondents, it is NOT. There is a problem. The software/hardware do NOT work as they are supposed to. Apple needs to address this problem immediately. Mac Book Pro will not wake from sleep when connected to a Cinema Display 23". The problem lies in the most recent operating system updates. Before the update the products worked as advertised, since then they do not. Period.
With all due respect, I am the one who posted this, and I marked it "answered." Yes, there very well may be a problem with the Leopard Graphics Update 1.0 (what a mouthful! I dub it "LGU v1.0" from this point on.), but this is so far only a hypothesis.
I found an immediate workaround which suits my purpose. If this does not suit the purposes of completely foreign (to this discussion) symptoms related to Intel-based Apple laptops and external displays, then so be it. I recommend splitting off your own symptoms to a new thread.
Certainly, my reading of the symptoms described after I posted mine mostly do not sound like what I ran into at all. For example, I never once said that my computer had problems waking from sleep. I said the /display/ had problems waking/starting up after sleep, and this is probably related to the "detect displays" mechanism that the OS uses to find attached displays when it comes out of suspend. Even if this is my misunderstanding it does not matter, since this is how it comes across to a reader. This may indicate that someone may want to clearly and carefully describe /exactly/ what they are seeing, and the steps they took in order to come to any conclusions they might have.
This will help Apple, and it will certainly help others that search these threads with their own similar but different issues they need solved.
If there is a common reproducible issue related to displays and the most recent update(s), then Apple already knows about it, or soon will. As far as my immediate needs are concerned, this is answered.

Mac book pro won't wake from sleep after Yosemite update

Since updating my laptop to Yosemite my MacBook hasnt woken from sleep
i can hear it turn on but the screen and keyboard don't light up
mac book is only 3 years old retina display

Mike Doolin wrote:
I think I may have found the fix for this. My MacBook Pro was dying in its sleep every time (after installing Snow Leopard), whether it went to sleep automatically or I used a Hot Corner. I went into System Preferences>Desktop & Screen Saver and changed the screen saver to Flurry, and it works now. I had had it set to a folder containing a single .pct file that I had created.
Good advice Mike! When in doubt check the ScreenSaver settings.
Definitely seems that it has a problem with that pic... In my case, selecting any images instead of the default setting (no screensaver) seems to have cured my non waking issue on my early Macbook Pro in Snow Leopard.
My original problem was that no amount of trackpad input woke it, but the space bar did. The space bar seemed to wake it up with the previous Screen Saver setting. Now trackpad wakes it up (even from total sleep as well as screen saver), too. Might be nice to know about if this is an intended 'feature' as a security trick. Otherwise I consider this a bug.
My vote is that it's a bug.

TS4080 apple thunderbolt display image on display intermittently goes dark, does not wake from sleep after clicking mouse or keyboard, but there is "bonk" sound after clicking mouse or pressing keys. Rebooting by pressing the power button resolves issue.

My apple thunderbolt display (which I purchased 1.5 years ago; OS 10.7.5 Mac Mini) intermittently goes dark, does not wake from sleep after clicking mouse or keyboard, but there is "bonk" sound after clicking mouse or pressing keys, so am thinking it is a hardware problem with the display. Rebooting by pressing the power button turns the screen back on, but the same phenomenon has occurred several times. Could this be a software issue, or do I need to have my display repaired? Your feedback would be appreciated.

Hi ED, tough to tell, but it does sound like it's waking with the bonk, just not displaying.
Long shot but...
I wonder if it's a variation of this, of which I've seen many different symptoms...
Resolution
Move the mouse or trackpad cursor over the center area of the login window so you can see the user icons. Click on the icon of the user that you would like to login as, type in the user's password, and press Return.
If the login window is configured to show only the name and password fields, type in the user's name and password into the fields, and press Return (even if you cannot see the rest of the login window).
Additional Information
This issue will not occur if the display is not sleeping when the account is logged out. Use the steps below to confirm that the account is not configured to log out automatically while the display is sleeping:
1. Open System Preferences > Security & Privacy > General. Click the padlock to unlock the preference pane and enter your admin password. Click the Advanced button at the bottom, then see if the option "Log out after N minutes of inactivity" (where N is the number of minutes) is enabled.
2. Open System Preferences > Energy Saver and configure Display Sleep to occur after the account is logged out, by dragging the slider to a number of minutes that is greater than N was set to in the previous step.
Important: If automatic log out is not needed, disable "Log out after Nminutes of inactivity" in System Preferences > Security & Privacy > General. This will also prevent the issue.
http://support.apple.com/kb/TS4135?viewlocale=en_US

IMac will not wake from sleep after 10.4.8 Update

Recently after a couple of software updates my IMac goes to sleep and the Bluetooth keyboard and mouse will not wake it. The option for wake with Bluetooth is checked. I zapped the PRAM and also checked the HD, Nothing has changed. NOTE: No new software or hardware installs were done except for 10.4.8 update and the other mac software updates. This did not happen in prior versions of the OS on my iMac. Is this a new bug?
iMac G5 1.8 (pre iSight) Mac OS X (10.4.8) Bluetooth, Wake from Sleep

I've been dealing with this same issue, have tried everything, but to no avail. After MANY sessions on the phone with Apple tech support, as well as an Apple product specialist, I was advised to erase my computer and do a fresh install. I did an archive an install, which didn't help, but am not thrilled about the prospect of erasing everything and starting over. This problem started after the August 2006 round of updates. I feel it's bluetooth related, because I used a usb keyboard and mouse for a week as a test, with no problem. The funny thing is, I unchecked "allow bluetooth device to wake computer" thinking it might help, but the bluetooth devices continue to wake the computer anyway (except when it refuses to wake, of course!)
Jerry

My elderly iMac (about six years old) won't wake from sleep after an electrical failure today, and starts up with a black screen.

This Intel iMac is about six years old, has had the motherboard replaced by Apple. Today we had an electrical failure, and it was asleep at the time. It refused to wake from sleep, and it seems to start up, but the screen stays black. I tried zapping the PRAM, shutting it down and turning off the surge protector, etc. . . and still, nothing. Any thoughts?

If http://support.apple.com/kb/HT3964 Intel-based Macs: Resetting the System Management Controller (SMC) does not work and you are comfortable working in the Terminal, try the following:
Enter into the Terminal the following: sudo pmset autopoweroff 0 and sudo pmset standby 0
If you like the hibernation, you can switch it back on by re-entering the commands with 1's instead of 0's. You can even change the amount of time by adjusting "autopoweroffdelay" and "standbydelay".

Crashes after wake from Sleep after 10.8.1 update

2.5 Ghz Mac Mini (mid 2011), 8 Gigs of RAM
Since the day I upgraded to 10.8.1 I have had persistent crashes, 1 every 24 hours or so. It's always shortly after a wake from sleep. In all cases, it is impossible to switch to a random open application. But once I hit that application, no other application will respond to anything, including a Force Quit, or if it will force quit, it won't relaunch. A shut down will hang because an app refuses to quit. I can quit the Finder, but it won't relaunch. Have reinstalled Mountain Lion twice, zapped the PRAM, reset the SMC, checked and extensively tested the HD and RAM. Replaced RAM with original Apple RAM. Didn't help, so I swapped back to the RAM from Crucial. I can't think of anything else to try. Machine does not crash unless it has been asleep. Runs flawlessly when sleep is disabled. After a reboot (usually via a shut down via the power switch, start from scratch, check of the HD integrity, and then a clean restart) the machine will run fine, sleep and wake normally for about 24 hours. As near as I can tell from the logs, the hangs usually begin right after the Time Machine Backup after a wake from sleep finishes. If I don't allow the machine to sleep, there are no problems of any kind. Making me crazy. Did not occur under Lion or the .0 version of Mountain Lion. Is making me crazier than I normally am which is sorta serious.

Any solutions to this problem? I too have this kernel panic, however it only happens about once a week. Always upon wake from sleep as you've indicated.
FYI I don't have intego software, or an APC installed. Nor am I using filevault.
This is on an up to date, MacBook Pro Retina.
Robert

MacBook won't automatically wake from sleep after flipping computer open.

The only way my computer both goes to sleep and wakes from sleep is by clicking on the Apple icon and putting it to sleep before closing the lid and by pressing the power button after opening the lid. If I just close the lid without first clicking on "Sleep" under the Apple icon, the computer will continue to run and the Apple on the lid will continue to be lit while the sleep indicator light does not go on. If I just open the lid and do not press the power button, the screen will continue to be black and the sleep indicator light continues to glow. I'm not sure if I reset a system preference or something by mistake, but is there a way to fix this? Or is this an indication of a bigger problem?
Additionally, when my computer is asleep and I unplug my charging iPod, it wakes from sleep (the sleep indicator light goes black while the Apple on the back of the screen lights up). Is this an indication of a bigger problem?
My computer is only about 7 months old, so I am a bit worried if it is starting to show wear and tear already. Thank you for your help!

You're welcome to the Forums.
Go to System Preferences>Energy Saver, and set a time for your System to sleep.
Set both sliders to 10 or 15mins to nod off, when Inactive.
It's never a good idea to plug in or out, while the Computer is sleeping. If someone pokes at your ear while you're sleeping, you'll wake up too.

IMac 6 won't wake from sleep

This is a 2nd hand question, as the computer does not belong to me, but I'm trying to assist a friend.
The iMac will not wake from sleep. If the hard drive is set to never sleep, the system will come out of sleep. But if the hard drive spins down and the system goes into standby mode, it can't be awakened. Not by a short press of the power button, movement of the mouse, or click of the keyboard (wired or wireless).
The iMac was taken to an Apple store for diagnosis. They used a 3rd party software tool (not the default OSX diagnostics) that showed no hardware issues per se, but it was noted that when putting the iMac to sleep and attempting to awaken it, the processor never gets a signal to do so. They surmised that it may be a power supply issue or something to do with a component on the motherboard. They re-installed the OSX completely fresh to rule out software as an issue. But the next day, the owner found that the same problem persisted.
First, I'm curious to know if anyone has ever reported this problem with the iMac 6 and if there's a known culprit. And naturally, if that culprit is easily fixed or if the motherboard would have to be replaced.
Second, since the problem does not happen with the hard drive staying "awake", would this problem be averted by installing an SSD?

Hello, what 3rd party Apps might be installed?
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
Reboot, test again.
If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or 3rd party add-on, Check System Preferences>Accounts>Login Items window to see if it or something relevant is listed.
Check the System Preferences>Other Row, for 3rd party Pref Panes.
Also look in these if they exist, some are invisible...
/private/var/run/StartupItems
/Library/StartupItems
/System/Library/StartupItems
/System/Library/LaunchDaemons
/Library/LaunchDaemons

Strange behavior in Preps 5 after Security Update 2012-001

After installing Security Update 2012-001 this morning, my Save dialog box no longer appears in Preps 5.0. Another iMac running 10.6.8 that was not updated has no problems. Any ideas how to fix this or a workaround?

Howdy,
Apparently some are reporting that this causes the older PowerPC (PPC) applications that are supported in 10.6 via 'Rosetta' to crash upon attempting to open/save/print using any dialog box, or fail in other similar ways such as simply not printing or quitting, or freezing/hanging/crashing of the application.
You might wish to read:
http://www.macintouch.com/readerreports/snowleopard/index.html#d02feb2012
If you are unsure if you are still using PowerPC apps, if the application is currently running, look under the 'Activity Monitior' (in Applications -> Utilities), or alternatively you could check in the System Profiler, Applications. Check the column "Type".
Here is a fairly simple way you can restore you system and restore you applications functionality again, if you don't have a recent clone or good Time Machine backup that you can restore from. If you do, restore from your backup prior to having installed the Security Update 2012-001.
Time Machine restore: http://support.apple.com/kb/ht1427
If you are restoring a backup made by a Mac to the same Mac
With your backup drive connected, start up your Mac from the Lion recovery partition (Command-R at startup) or Mac OS X v10.6 installation disc. Then use the "Restore From Time Machine Backup" utility. Select the backup prior to your issues, and it will be restored back to the state it was in at that time.
If you can't easily restore from a backup, you can instead do the following:
- You first start by reinstalling your OS X 10.6.x, this will preserve all your user data, your applications, no worries there.
- Then install the Mac OS X 10.6.8 Update Combo v1.1 (links provided below)
- Make sure you're printers are showing up correctly in your system preferences, if not, re-add the printers
- Then finally, run the Apple Software Update (by pulling down the Apple Menu), and install any and all remaining updates, except do not then re-install the Security Update 2012-001. It is possible that you may have to reboot after installing some of the updates, and you may even need to run it a 2nd time to make sure that you've got all updates, except NOT the Security Update 2012-001.
Links for 10.6.8 Update Combo v1.1:
http://support.apple.com/kb/DL1399
or the link to directly download this 1.09GB combo updater:
http://support.apple.com/downloads/DL1399/en_US/MacOSXUpdCombo10.6.8.dmg
Cheers,
Daniel Feldman
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Menu Bar Icons Disappeared and other issues after Security Update 2006-001

Hi,
I was really affraid when i've heard about the Safari vulnerability, so I was really happy to see the Security Update 2006-001.
But after installing it, I'm having regrets:
* mouse speed turned to default settings
* system preferences crashes when i try to access to Mouse & Keyboard
* all the menu bar icons disappeared: Bluetooth, Airport, Time, EVEN Spotlight
* Finder is slower...
I've repaired disk permissions but: nothing happens....
What should I do please?
Should I wait?

How did you fix it? I'm having the same problem
myself.
Mandy,
I'm gonna tell you a secret, just like i said my problem wasn't due to the Security Update but because of Front Row.
How? Because, I've hacked my iMac (without iSight) to install FrontRow (with an update), and i've installed the Security Update at the same time. Restarted my computer, and thought the problem was due to the Security Update.
If you did the same thing, here's the trick to remove Front Row:
Delete Front Row (/System/Library/CoreServices/Front Row.app)
Install/reinstall the the latest Mac OS X Update Combo.
This article assumes you haven’t tried installing Front Row before without the use of Enabler. If you have used one of the very early versions of Front Row (ones installed without Enabler):
Delete Front Row (/System/Library/CoreServices/Front Row.app)
Delete the preference file (/System/Library/LaunchAgents/com.apple.frontrow.plist)
Remove any Login Items that launch Front Row (System Preferences >Accounts >User >Login Items)
Disable any shortcuts managed by third-party applications that launched Front Row.
Reboot and reinstall.

Rosetta Problems after Security Update 2012-001

My crack team of sys admins and I have devised a method for resolving some of the issues regarding the Security Update 2012-001 and Rosetta.
http://www.educate-it.org/content.php?130-Rosetta-Issue-after-Security-Update-20 12-001
Click this link for an Installer that will revert the files necessary for some Rosetta apps to run after the Security Update. This is a band-aid and is only recommended in emergency situations. Apple is currently working on a fix, but until that happens, we are stuck with reverse-engineering their update. I hope this helps those in distress from this update.

Backup files off the computer (not TimeMachine) and disconnect.
If you have TM, or a option key bootable clone use that to erase and restore from.
If not, c boot off the 10.6 disk, use Disk Utility to >Repair Disk and Permissions, (do not format or erase!!) and simply re--install 10.6 from the disk. Note: Does not touch your files and most programs, but backup your files regardless.
Note: If Disk Repair gives a error that is not repaired, then you have to consider erasing the drive (with Zeros) and try reinstalling 10.6 fresh or replacing the drive.
Reboot and log in, update to 10.6.8, it should not include the security update at this time (second pass it might show) because it was just released and they might need to pull it. (they need to pull it)
When you reboot, make sure to reinstall any programs that installed kext files into OS X, you'll know, they won't work.
If you get gray screen, hold the shift key and update your installed software so it's compatible with 10.6.8.
Learn how to clone here
http://www.bombich.com/get_ready_for_lion.html
TM help here
http://pondini.org/OSX/Home.html
Learn how to make copies of your 10.6 disks here
http://www.walterjessen.com/make-a-bootable-backup-snow-leopard-install-disc/
Learn how to make a bootable SL USB
http://www.maciverse.com/install-os-x-snow-leopard-from-usb-flash-drive.html
Learn which programs ARE NOT compatible with Lion
http://roaringapps.com/apps:table
Long live the Snow Leopard.

IMac (Early 2009) always wakes from sleep after Security Update 2010-001

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