IMac suddenly shutting down

Below is what my iMac tells me when it suddenly shuts down or freezes. Does this mean anything to anybody. Quite frustrating. I don't want to buy a new machine if there is some fix for this but I also cannot afford to be without my machine while it is in the shop for a look under the hood.
Any suggestions would most appreciated.
Thaks
Interval Since Last Panic Report: 946299 sec
Panics Since Last Report: 1
Anonymous UUID: C6A31E5E-0055-4BC4-8DCC-FC27D1FE8CB5
Tue Aug 31 08:20:44 2010
panic(cpu 1 caller 0x28d59c): "pmapflushtlbs() timeout: " "cpu(s) failing to respond to interrupts, pmap=0x84b6e0 cpustorespond=0x1"@/SourceCache/xnu/xnu-1504.7.4/osfmk/i386/pmap.c:3548
Backtrace (CPU 1), Frame : Return Address (4 potential args on stack)
0x434ab9f8 : 0x21b455 (0x5cf328 0x434aba2c 0x2238b1 0x0)
0x434aba48 : 0x28d59c (0x58d740 0x84b6e0 0x1 0xf5067c)
0x434abab8 : 0x292a68 (0x84b6e0 0x0 0x1 0x42e1a000)
0x434abbe8 : 0x2937b9 (0x84b6e0 0x42e17000 0x0 0xfea170b8)
0x434abc58 : 0x2608ee (0x84b6e0 0x42e17000 0x0 0x42e1b000)
0x434abd88 : 0x260e89 (0x42e1b000 0x0 0x1 0x0)
0x434abdc8 : 0x259c63 (0x2645ebc 0x42e17000 0x0 0x42e1b000)
0x434abe08 : 0x495bca (0x2645ebc 0x42e17000 0x4000 0x67084b4)
0x434abe28 : 0x495ce6 (0x2a7007c 0x887f0d0 0x434abe58 0x2f7006)
0x434abe58 : 0x495d48 (0x711e598 0x20 0x434abe88 0x4f9da8)
0x434abe88 : 0x4696fc (0x68f7cd8 0x434abed8 0x3c 0x0)
0x434abef8 : 0x46b4ad (0x7158790 0x68f7cd8 0x711e540 0x37b)
0x434abf38 : 0x46b57e (0x0 0xe 0x434abf5c 0x1)
0x434abf78 : 0x4edaf8 (0x711e540 0x6aa9a68 0x702e594 0x0)
0x434abfc8 : 0x29f43d (0x6aa9a64 0x1 0x10 0x8b86680)
BSD process name corresponding to current thread: vmware-vmx
Mac OS version:
10F569
Kernel version:
Darwin Kernel Version 10.4.0: Fri Apr 23 18:28:53 PDT 2010; root:xnu-1504.7.4~1/RELEASE_I386
System model name: iMac5,1 (Mac-F4228EC8)

This line in the panic report:
System model name: iMac5,1
indicates that yours is an Intel imac and much newer than the ones covered in this forum. Any hardware issue you have may not affect the older machines. The labeling of this forum is prety vauge, so it's not your fault. Suggest you repost in the Intel iMAc forums here:
http://discussions.apple.com/category.jspa?categoryID=189
As the panic report suggests a hardware problem, the people in the other forum may see something familiar. You may also wish to review this excellent article on kernel panics, which is what you've experienced:
http://thexlab.com/faqs/kernelpanics.html

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7/22/09 10:39:01 AM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
7/22/09 10:39:01 AM com.apple.launchd[1] (com.apple.blued) Unknown key for boolean: EnableTransactions
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7/22/09 10:39:01 AM com.apple.launchd[1] (org.cups.cupsd) Unknown key: SHAuthorizationRight
7/22/09 10:39:01 AM com.apple.launchd[1] (org.ntp.ntpd) Unknown key: SHAuthorizationRight
7/22/09 10:39:01 AM com.apple.launchd[1] (org.x.privileged_startx) Unknown key for boolean: EnableTransactions
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7/22/09 10:39:14 AM com.apple.launchd[1] (com.apple.ScreenSharing.server[73]) Exited: Terminated
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7/22/09 10:39:15 AM com.apple.launchd[81] (org.x.startx) Unknown key for boolean: EnableTransactions
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7/22/09 10:39:17 AM com.apple.launchd[81] ([0x0-0xf00f].SoftwareUpdateCheck[104]) Exited with exit code: 3
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7/22/09 10:41:29 AM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
7/22/09 10:41:29 AM com.apple.launchd[1] (com.apple.blued) Unknown key for boolean: EnableTransactions
7/22/09 10:41:29 AM com.apple.launchd[1] (com.apple.usbmuxd) Unknown key for boolean: EnableTransactions
7/22/09 10:41:29 AM com.apple.launchd[1] (org.cups.cups-lpd) Unknown key: SHAuthorizationRight
7/22/09 10:41:29 AM com.apple.launchd[1] (org.cups.cupsd) Unknown key: SHAuthorizationRight
7/22/09 10:41:29 AM com.apple.launchd[1] (org.ntp.ntpd) Unknown key: SHAuthorizationRight
7/22/09 10:41:29 AM com.apple.launchd[1] (org.x.privileged_startx) Unknown key for boolean: EnableTransactions
7/22/09 10:41:35 AM org.ntp.ntpd[27] Error : nodename nor servname provided, or not known
7/22/09 10:41:39 AM com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[80]) Exited: Terminated
7/22/09 10:41:39 AM com.apple.launchd[1] (com.apple.ScreenSharing.server[79]) Exited: Terminated
7/22/09 10:41:39 AM com.apple.launchd[86] (com.apple.AirPortBaseStationAgent) Unknown key for boolean: EnableTransactions
7/22/09 10:41:39 AM com.apple.launchd[86] (org.x.startx) Unknown key for boolean: EnableTransactions
7/22/09 10:41:42 AM com.apple.launchd[86] ([email protected][90]) Exited with exit code: 1
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7/22/09 8:39:44 PM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
7/22/09 8:39:44 PM com.apple.launchd[1] (com.apple.blued) Unknown key for boolean: EnableTransactions
7/22/09 8:39:44 PM com.apple.launchd[1] (com.apple.usbmuxd) Unknown key for boolean: EnableTransactions
7/22/09 8:39:44 PM com.apple.launchd[1] (org.cups.cups-lpd) Unknown key: SHAuthorizationRight
7/22/09 8:39:44 PM com.apple.launchd[1] (org.cups.cupsd) Unknown key: SHAuthorizationRight
7/22/09 8:39:44 PM com.apple.launchd[1] (org.ntp.ntpd) Unknown key: SHAuthorizationRight
7/22/09 8:39:44 PM com.apple.launchd[1] (org.x.privileged_startx) Unknown key for boolean: EnableTransactions
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7/22/09 8:39:54 PM com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[74]) Exited: Terminated
7/22/09 8:39:54 PM com.apple.launchd[1] (com.apple.ScreenSharing.server[73]) Exited: Terminated
7/22/09 8:39:56 PM com.apple.launchd[81] (com.apple.AirPortBaseStationAgent) Unknown key for boolean: EnableTransactions
7/22/09 8:39:56 PM com.apple.launchd[81] (org.x.startx) Unknown key for boolean: EnableTransactions
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7/22/09 8:40:01 PM com.apple.launchd[81] ([email protected][85]) Exited with exit code: 1
7/22/09 8:51:04 PM iDVD[117] Warning once: This application, or a library it uses, is using NSQuickDrawView, which has been deprecated. Apps should cease use of QuickDraw and move to Quartz.
7/22/09 8:51:05 PM com.apple.loginwindow[36] Shutdown NOW!
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7/22/09 9:18:06 PM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
7/22/09 9:18:06 PM com.apple.launchd[1] (com.apple.blued) Unknown key for boolean: EnableTransactions
7/22/09 9:18:06 PM com.apple.launchd[1] (com.apple.usbmuxd) Unknown key for boolean: EnableTransactions
7/22/09 9:18:06 PM com.apple.launchd[1] (org.cups.cups-lpd) Unknown key: SHAuthorizationRight
7/22/09 9:18:06 PM com.apple.launchd[1] (org.cups.cupsd) Unknown key: SHAuthorizationRight
7/22/09 9:18:06 PM com.apple.launchd[1] (org.ntp.ntpd) Unknown key: SHAuthorizationRight
7/22/09 9:18:06 PM com.apple.launchd[1] (org.x.privileged_startx) Unknown key for boolean: EnableTransactions
7/22/09 9:18:17 PM org.ntp.ntpd[27] Error : nodename nor servname provided, or not known
7/22/09 9:18:20 PM com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[74]) Exited: Terminated
7/22/09 9:18:20 PM com.apple.launchd[1] (com.apple.ScreenSharing.server[73]) Exited: Terminated
7/22/09 9:18:21 PM com.apple.launchd[83] (com.apple.AirPortBaseStationAgent) Unknown key for boolean: EnableTransactions
7/22/09 9:18:21 PM com.apple.launchd[83] (org.x.startx) Unknown key for boolean: EnableTransactions
7/22/09 9:18:24 PM com.apple.launchd[83] ([email protected][87]) Exited with exit code: 1
7/22/09 9:30:03 PM iDVD[135] Warning once: This application, or a library it uses, is using NSQuickDrawView, which has been deprecated. Apps should cease use of QuickDraw and move to Quartz.
7/22/09 9:54:14 PM com.apple.launchd[83] (com.apple.Spotlight[93]) Exited abnormally: Segmentation fault
7/22/09 10:00:26 PM iDVD[228] Warning once: This application, or a library it uses, is using NSQuickDrawView, which has been deprecated. Apps should cease use of QuickDraw and move to Quartz.
7/23/09 10:53:01 AM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
7/23/09 10:53:01 AM com.apple.launchd[1] (com.apple.blued) Unknown key for boolean: EnableTransactions
7/23/09 10:53:01 AM com.apple.launchd[1] (com.apple.usbmuxd) Unknown key for boolean: EnableTransactions
7/23/09 10:53:01 AM com.apple.launchd[1] (org.cups.cups-lpd) Unknown key: SHAuthorizationRight
7/23/09 10:53:01 AM com.apple.launchd[1] (org.cups.cupsd) Unknown key: SHAuthorizationRight
7/23/09 10:53:01 AM com.apple.launchd[1] (org.ntp.ntpd) Unknown key: SHAuthorizationRight
7/23/09 10:53:01 AM com.apple.launchd[1] (org.x.privileged_startx) Unknown key for boolean: EnableTransactions
7/23/09 10:53:14 AM com.apple.launchd[1] (com.apple.aslmanager) Throttling respawn: Will start in 9 seconds
7/23/09 10:53:14 AM com.apple.launchd[1] (com.apple.aslmanager) Throttling respawn: Will start in 9 seconds
7/23/09 10:53:14 AM com.apple.launchd[1] (com.apple.aslmanager) Throttling respawn: Will start in 9 seconds
7/23/09 10:53:16 AM com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[74]) Exited: Terminated
7/23/09 10:53:16 AM com.apple.launchd[1] (com.apple.ScreenSharing.server[73]) Exited: Terminated
7/23/09 10:53:16 AM com.apple.launchd[80] (com.apple.AirPortBaseStationAgent) Unknown key for boolean: EnableTransactions
7/23/09 10:53:16 AM com.apple.launchd[80] (org.x.startx) Unknown key for boolean: EnableTransactions
7/23/09 10:53:17 AM com.apple.launchd[80] ([email protected][84]) Exited with exit code: 1
7/23/09 10:55:26 AM com.apple.launchctl.System[2] fsck_hfs: Volume is journaled. No checking performed.
7/23/09 10:55:26 AM com.apple.launchctl.System[2] fsck_hfs: Use the -f option to force checking.
7/23/09 10:55:29 AM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
7/23/09 10:55:29 AM com.apple.launchd[1] (com.apple.blued) Unknown key for boolean: EnableTransactions
7/23/09 10:55:29 AM com.apple.launchd[1] (com.apple.usbmuxd) Unknown key for boolean: EnableTransactions
7/23/09 10:55:29 AM com.apple.launchd[1] (org.cups.cups-lpd) Unknown key: SHAuthorizationRight
7/23/09 10:55:29 AM com.apple.launchd[1] (org.cups.cupsd) Unknown key: SHAuthorizationRight
7/23/09 10:55:29 AM com.apple.launchd[1] (org.ntp.ntpd) Unknown key: SHAuthorizationRight
7/23/09 10:55:29 AM com.apple.launchd[1] (org.x.privileged_startx) Unknown key for boolean: EnableTransactions
7/23/09 10:55:39 AM com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[72]) Exited: Terminated
7/23/09 10:55:39 AM com.apple.launchd[1] (com.apple.ScreenSharing.server[71]) Exited: Terminated
7/23/09 10:55:41 AM com.apple.launchd[81] (com.apple.AirPortBaseStationAgent) Unknown key for boolean: EnableTransactions
7/23/09 10:55:41 AM com.apple.launchd[81] (org.x.startx) Unknown key for boolean: EnableTransactions
7/23/09 10:55:50 AM com.apple.launchd[81] ([email protected][85]) Exited with exit code: 1
7/23/09 11:17:51 AM com.apple.launchctl.System[2] fsck_hfs: Volume is journaled. No checking performed.
7/23/09 11:17:51 AM com.apple.launchctl.System[2] fsck_hfs: Use the -f option to force checking.
7/23/09 11:17:54 AM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
7/23/09 11:17:54 AM com.apple.launchd[1] (com.apple.blued) Unknown key for boolean: EnableTransactions
7/23/09 11:17:54 AM com.apple.launchd[1] (com.apple.usbmuxd) Unknown key for boolean: EnableTransactions
7/23/09 11:17:54 AM com.apple.launchd[1] (org.cups.cups-lpd) Unknown key: SHAuthorizationRight
7/23/09 11:17:54 AM com.apple.launchd[1] (org.cups.cupsd) Unknown key: SHAuthorizationRight
7/23/09 11:17:54 AM com.apple.launchd[1] (org.ntp.ntpd) Unknown key: SHAuthorizationRight
7/23/09 11:17:54 AM com.apple.launchd[1] (org.x.privileged_startx) Unknown key for boolean: EnableTransactions
7/23/09 11:18:10 AM com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[75]) Exited: Terminated
7/23/09 11:18:10 AM com.apple.launchd[1] (com.apple.ScreenSharing.server[74]) Exited: Terminated
7/23/09 11:18:10 AM com.apple.launchd[82] (com.apple.AirPortBaseStationAgent) Unknown key for boolean: EnableTransactions
7/23/09 11:18:10 AM com.apple.launchd[82] (org.x.startx) Unknown key for boolean: EnableTransactions
7/23/09 11:18:12 AM com.apple.launchd[82] ([email protected][86]) Exited with exit code: 1
7/23/09 11:19:23 AM [0x0-0x12012].com.apple.Safari[115] Debugger() was called!
7/23/09 11:55:06 AM com.apple.launchctl.System[2] fsck_hfs: Volume is journaled. No checking performed.
7/23/09 11:55:06 AM com.apple.launchctl.System[2] fsck_hfs: Use the -f option to force checking.
7/23/09 11:55:08 AM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
7/23/09 11:55:08 AM com.apple.launchd[1] (com.apple.blued) Unknown key for boolean: EnableTransactions
7/23/09 11:55:08 AM com.apple.launchd[1] (com.apple.usbmuxd) Unknown key for boolean: EnableTransactions
7/23/09 11:55:08 AM com.apple.launchd[1] (org.cups.cups-lpd) Unknown key: SHAuthorizationRight
7/23/09 11:55:08 AM com.apple.launchd[1] (org.cups.cupsd) Unknown key: SHAuthorizationRight
7/23/09 11:55:08 AM com.apple.launchd[1] (org.ntp.ntpd) Unknown key: SHAuthorizationRight
7/23/09 11:55:08 AM com.apple.launchd[1] (org.x.privileged_startx) Unknown key for boolean: EnableTransactions
7/23/09 11:55:25 AM com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[76]) Exited: Terminated
7/23/09 11:55:25 AM com.apple.launchd[1] (com.apple.ScreenSharing.server[75]) Exited: Terminated
7/23/09 11:55:25 AM com.apple.launchd[82] (com.apple.AirPortBaseStationAgent) Unknown key for boolean: EnableTransactions
7/23/09 11:55:25 AM com.apple.launchd[82] (org.x.startx) Unknown key for boolean: EnableTransactions
7/23/09 11:55:25 AM com.apple.launchd[82] ([email protected][86]) Exited with exit code: 1
7/23/09 12:02:59 PM iMac EFI Firmware Update[140] TMPDIR is set to '/var/folders/GC/GCWw-4RiGJSH3cFjActCtE+TI/-Tmp-/', unsetting it.
7/23/09 12:02:59 PM iMac EFI Firmware Update[140] iMac EFI Firmware Update version 1.4
7/23/09 12:02:59 PM iMac EFI Firmware Update[140] OS version is 10.5.7 build 9J61.
7/23/09 12:02:59 PM iMac EFI Firmware Update[140] No AppleEFINVRAM
7/23/09 12:03:01 PM [0x0-0x19019].com.apple.updaters.imac.efifirmwareupdater14[140] Run the executable in the Contents/MacOS folder with '-h' option to learn about running remotely.

most likely caused by overheating due to video encoding increasing cpu usage (system freezing and shutdowns is a problem with older intel imacs). monitor your internal temps using an app like istat. temporary workaround is to use an fan control app like imacfancontrol and increase the cpu fan speeds. but this does not actually fix the problem which may arise more periodically as the system gets older.
http://www.islayer.com/apps/istatpro/
http://www.derman.com/Download/Special/iMacFanControl.html
there's a very long thread regarding this problem:
http://discussions.apple.com/thread.jspa?threadID=1467276&tstart=0

Imac g5 shutting down right after startup

My computer had until today been operating perfectly. When I came into my office it was shut down ( I usually leave it on all the time). After restarting, I worked for about five minutes and then it suddenly shut down. The same thing recurred after 5 or 6 restarts before I gave up. Any suggestions? I assume this is an overheating or power supply issue.

This is the wrong forum for this topic, This is a forum for the new Intel iMacs.

Sudden shut down (not covered by Extended Repair Program)

I started having problems with sudden shut downs on my 17" iMac G5 1.9GHz lately (actually problem started after upgrading to Mac OS 10.4.8 this week): the computer will go dark like with a power outage - sometimes while I am working on something, other times while it is just idle.
I have researched the discussion board and found that earlier iMacs seem to have a known power problem, but have not found anything on my generation iMac so far (serial # W8547***).
I have tried all suggestions - including resetting SMU & PRAM, checked power lines, downloaded the new Security Update etc - nothing seems to do the trick. I hooked up an external harddrive last night to back up data - five tries each failed, because computer shuts down at some point or the other.
System log lists shutdown causes 2 & -110...
G5 Dual | MacBook Pro | iMac G5 | iBook G3 Mac OS X (10.4.8)

Hi, J & F.
I am sure you have searched no only the forum, but also the support pages of apple.
If i understand you right, it happend EXACTLY after the update of the OSX. It looks tgo me as if something went wrong in this process. I would try:
a) to start up in "single user mode" - this checks whether it is something else than the bare operating system; It would give you the indication that your machine is, hardware-wise, still fine. This would eliminate the Powersuplly problem. However, it does not isolate the powersupply as faultive in case that this step doesn't work!
b) to start up in "Target disk mode" - to see whether you can get anything reasonable done. this helps you to see whether the disk can be used... nothing more.
The real solution probably comes only by reinstalling the original software from your install disk. Be sure that you have a backup of all your files!
I would try and "Archive and Install" , but do , directly after this, a "Repair permissions". If this doesn't help, i would go through an "ERASE and INSTALL". In both cases, don't upgrade the lates OSX versions, stay with the one from your install disk. only, if everything works, go and update OSX.
Hope this helps - please, post back.
Thomas

Suddenly Shut Down my mac book pro, late 2011

Hello guys, i need your help.
Last 2 weeks, suddenly my macbookpro shut down, and it makes me shock.
After a few second shut down, i try to turn it on.
it just make sound like turn on your mac and suddenly shut down again.
It shut down for 3 times and more.
When i plug in the charger, it turn on.
But after i unplug the charger it suddenly shut down again.
i try to shut down my mac properly, and when i turn on again it works.
My friends say that it could be my battery, i checked it, and my battery was normal.
And i search about this issue, some people say to reset SMC, i dont know if it would works or not.
Did reset SMC will makes you lose you data or something?
Now, i must plug the charger when i want to turn on my mac.
Did this a serious problem or not? i need you advice guys.
Thanks!

No data is lost due to resetting the SMC.
But after i unplug the charger it suddently shut down again
The problem may be the adapter. Try here > Apple Portables: Troubleshooting MagSafe adapters
Hopefully your important files are backed up just in case.

My MacBook suddenly shut down and won't turn back on - how do I get it to turn back on?

My MacBook suddenly shut down after freezing up and I cannot get it to turn back on again. I tried the suggestions in the manual and none of them worked to turn it back on. Is there something I am not doing correctly? The little green light on the charger connector is green but not as bright as normal, it was charged by over 70% before it shut down, so I do not think it is a battery problem. Is there anything I can do to turn it back on? Thank you for any help given, I really appreciate it.

If it won't bong, then try an SMC reset.
http://support.apple.com/kb/HT3964
Can you boot in Safe Mode?
http://support.apple.com/kb/HT1564
Did you uninstall it this way?
http://www.microsoft.com/getsilverlight/get-started/install/removing-silverlight -mac.aspx

How to track down an app that is preventing my iMac from shutting down

Hello! I lately discovered that an application is preventing my iMac from shutting down . I have The Sims 3 installed on my computer but i don't think it's preventing my computer from shutting down.
So my question is, how can I find out what app is preventing my iMac from shutting down.

What's Keeping Me?
http://www.hamsoftengineering.com/products/wkm/wkm.html
Or open Terminal in Utilities and copy/paste this in. Then hit enter.
lsof -l +L -R -V | grep /

IMac suddenly shutting down

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