IMac just shuts down during iDVD build

*4 week old 20 inch iMac just shuts down during iDVD build of a dvd. Its really weird, because it is rendering and encoding and all of a sudden it just shuts down without a know. Then when I turn it back on it ejects the blank dvd out and starts. I had my SuperDrive replaced also like 2 days ago from the apple store. I have pasted the system.log if that helps?*
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
7/22/09 10:39:01 AM com.apple.launchd[1] (com.apple.usbmuxd) Unknown key for boolean: EnableTransactions
7/22/09 10:39:01 AM com.apple.launchd[1] (org.cups.cups-lpd) Unknown key: SHAuthorizationRight
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
7/22/09 10:39:07 AM org.ntp.ntpd[27] Error : nodename nor servname provided, or not known
7/22/09 10:39:14 AM com.apple.launchd[1] (com.apple.aslmanager) Throttling respawn: Will start in 3 seconds
7/22/09 10:39:14 AM com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[74]) Exited: Terminated
7/22/09 10:39:14 AM com.apple.launchd[1] (com.apple.ScreenSharing.server[73]) Exited: Terminated
7/22/09 10:39:15 AM com.apple.launchd[81] (com.apple.AirPortBaseStationAgent) Unknown key for boolean: EnableTransactions
7/22/09 10:39:15 AM com.apple.launchd[81] (org.x.startx) Unknown key for boolean: EnableTransactions
7/22/09 10:39:15 AM Dock[95] _DESCRegisterDockExtraClient failed 268435459
7/22/09 10:39:16 AM com.apple.launchd[81] ([email protected][85]) Exited with exit code: 1
7/22/09 10:39:17 AM [0x0-0xf00f].SoftwareUpdateCheck[104] SoftwareUpdateCheck: network unreachable
7/22/09 10:39:17 AM com.apple.launchd[81] ([0x0-0xf00f].SoftwareUpdateCheck[104]) Exited with exit code: 3
7/22/09 10:40:55 AM com.apple.loginwindow[36] Shutdown NOW!
7/22/09 10:40:55 AM com.apple.loginwindow[36] System shutdown time has arrived
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
7/22/09 10:42:06 AM com.apple.loginwindow[36] Shutdown NOW!
7/22/09 10:42:06 AM com.apple.loginwindow[36] System shutdown time has arrived
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
7/22/09 8:39:50 PM org.ntp.ntpd[27] Error : nodename nor servname provided, or not known
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
7/22/09 8:40:00 PM Dock[98] _DESCRegisterDockExtraClient failed 268435459
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!
7/22/09 8:51:05 PM com.apple.loginwindow[36] System shutdown time has arrived
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

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I have an intel 2.8gH Aluminum iMac that I purchased fall of 2007. Only now, almost 2 years later is it suddenly (just started yesterday) turning off randomly. Everytime it will not allow me to turn it back on until a minute or so has passed. I have reset the SMC as well as the PRAM several times. This afternoon, it is now to the point where I cannot even keep it running long enough to download an app to up the fan speeds. Although, I don't think it is overheating in the first place.
I'm really hoping it is just the power supply, as I've seen that be the fix for SOME iMacs i've found at other online forums. Though, the upper corner of my iMac is not hot or smelling burnt out at all. I have found more than several online forums of people complaining about their iMacs randomly shutting down, and am praying it is not the logic board, as that is a $900+ fix.
please, someone give me insight to how i can check if its the power supply or something else? I use this iMac for recording all of my music, editing video, and (of course) playing WoW lol. Currently using my 1st gen macbook.

I bought my iMac 20" in May 2006. I had been very impressed with it until one day I shut it down to move it to another room. I could not get it to turn back on. I had to leave it unplugged for a few hours. Since then it has started randomly shutting itself down, turning itself off and not starting up again until I unplug and leave it unplugged for a few hours. I had purchased the Apple Care? Extended Warranty, and the fault occurred during this three year period, though I failed to take the fault seriously and did not phone during the period. It was just after the three year warranty that I phoned Apple Care? about it and everyone I spoke to said they had not heard of this problem occurring. I wonder now, why the Apple Customer Service Team don't visit the discussions.apple.com where they will find quite a significant number of like problems occurring with the iMac sold in 2006.
My reason for paying the nearly triple price point for an Apple Computer was the quality of the build and my expectation that I would get far longer life out of my purchase. I don't like buying throw away products and I gladly save and wait longer to buy better quality products. Just as an example and point of reference. In 2000 I purchased a second hand Dell with 8GB HDD and 256Mb RAM. I paid $1000 for it and I gave it to my father when I got this iMac and he still has it running today. It has not had a single hardware issue in nine years. Good luck I suppose. However, after spending around $3000 on this iMac, and Apple now telling me the Logic Board is generically, non specifically 'failing', it goes against my pure desire for non disposable, throw away products to buy another Logic Board for AUS $1064. For one, I don't believe it has given me anywhere near the life that I expected from a product with such a high price point and solid reputation for quality, nor do I feel confidence in buying anything more 'Apple' after the dealings I have had with them over this problem. I am amazed that Apple would sell a 'failing' Computer to their customers and then expect that the customer will spend more money, considerably more, on a product that may be equally faulty and that they will not stand behind either.

G5 iMac sometimes shuts down instead of sleeping

I’ve recently started having a problem with my G5 iMac whereby it shuts down by itself after a while instead of sleeping.
Basically, I start up a task that might take awhile, such as burning photos to a DVD for backups, or updating an Aperture vault, and I go away for a while. I come back later, and sometimes I find that my iMac is sleeping as expected, and other times I find that it has shut itself down. It appears to complete the task before it shuts down. I’ve checked all of the preferences and can’t find any that tell it to shut down.
I’ve also checked the lists of G5 iMac that are affected by the known power supply capacitor issue, but mine is not in the list of affected units
I’ve searched the forums here, and I haven’t seen any other reports of this happening to anybody else.
Any ideas on what is happening?
PS: I’ve also been having occasional issues with unmounting external WD (Western Digital) FW drives lately too. I dismount the drive from the desktop, and the icon disappears as normal. I then power the drive down, but sometimes it will warn me that the drive was improperly removed and that data could be lost. This is odd since the drive icon was no longer on the desktop, so the drive appeared to be dismounted. This has happened with several different WD FW drives. The only thing I’ve noticed is that this doesn’t happen if the external drive appears to go to sleep after dismount. Sometimes, the drive appears to be active (even though the icon has disappeared). Again, any ideas?
Thanks in advance for your help.

MGW wrote:
Do your fans get very noisy before a shutdown?
Not before a normal shutdown. And since I'm never around when it shuts down by itself, I can't say for now.
MGW wrote:
It seems that you have some sort of thermal overload that causes the machine >to shut down during intensive use. You have enough RAM, and I assume that >your drive has at least 10-15% of free space, so either the thermal paste has >dried out, there is a bad connection or as a last thought, your logic board >could be failing.
I think I have around 165 GB or so of free space on the internal drive, so that should be OK. I didn't know about the thermal paste.
MGW wrote:
If it keeps on happening, you should, after making a full backup, take it in >to Apple and have them take a look.
I'm trying to keep my backups up to date, and I figured that it may need to go in. At some point, I would like to get a new computer, either a new 24" iMac, or a Mac Pro with a 30" monitor. I was hoping to get the new one before I'd need to send this one in for repair, but I might not be able to wait. This iMac is about 3.5 years old, so my Apple Care has expired.
It is odd that it always seems to complete the task at hand before the shutdown. If it was purely due to hardware, it should be more random than that, and not wait for the task to complete. I was starting to wonder if there is some sort of bug in the latest version of Leopard. I didn't have this happen before I upgraded to 10.5.6, but maybe that just a coincidence.
Thanks again for you help.

Imac G5 Shuts down at start up?

I have an imac G5 running 10.4 that shuts down during the start up process. It gets to the grey apple screen and the spinning wheel and then just shuts down. I have tried the original start up disk and the same thing happens. I have tried Holding C and nothing, and I have tried just the option key. I have already tried to load it in safe mode and no luck. I have even done the command-v as well. I am at a lost and wonder if the problem is even worth fixing if I take it to get repaired.

jsandberg wrote:
I have an imac G5 running 10.4 that shuts down during the start up process. It gets to the grey apple screen and the spinning wheel and then just shuts down. I have tried the original start up disk and the same thing happens. I have tried Holding C and nothing, and I have tried just the option key. I have already tried to load it in safe mode and no luck. I have even done the command-v as well. I am at a lost and wonder if the problem is even worth fixing if I take it to get repaired.
Only you can answer that one. You have already tried all the usual troubleshooting solutions. Take the comp in for repairs and get an estimate. If you feel the price is worth it....................................
If you do get the computer repaired, it will be to your best interest to update your OS to 10.4.1. Use Software Update to update your OS to the last version of Tiger. Install all the other updates that goes along w/it.
Which G5 model/generation do you have? See KB Articles: http://docs.info.apple.com/article.html?artnum=301724-en How to identify your iMac and http://docs.info.apple.com/article.html?artnum=300205 iMac G5 DIY (Do-It-Yourself) Instructions

IMac just shuts down during iDVD build

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