Panic Report Help Needed Please

Over the last few months the power switch on my 2 year old Intel-based Imac has not always worked and I've had to reset the PRAM which seems to help. Today I put the Imac to sleep and when I tried to "revive" it nothing happened. I then pressed the power button for a few seconds and still nothing so I held it down until I heard (what I think) was the Imac rebooting. When the desktop came up the Panic dialog displayed. This is the first time I've seen this dialog on my machine and would like help in deciphering what might be going on. I've included the panic dialog, system configuration and latest updates. Thanks in advance. BD

Interval Since Last Panic Report: 4160209 sec
Panics Since Last Report: 1
Anonymous UUID: F3DBC845-1275-48F6-A217-6016408C5488

Sun Jan 2 20:37:13 2011
panic(cpu 0 caller 0x00BAC9AD): "pmexitHaltToOff: CPU 1 not in LCPU_HALT(5)"@/SourceCache/AppleIntelCPUPowerManagement/
AppleIntelCPUPowerManagement-76.2/cstateCPU.c:1805
Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)
0x56f57ce8 : 0x12b4c6 (0x45f91c 0x56f57d1c 0x13355c 0x0)
0x56f57d38 : 0xbac9ad (0xbb9644 0x1 0x5 0x120)
0x56f57d78 : 0x1b329b (0x50f190a4 0x0 0x56f57da8 0x3f36a7)
0x56f57da8 : 0x726ffe (0x726e50 0x3 0x246 0x131e9a)
0x56f57dc8 : 0x71b44c (0x7048600 0x2 0x0 0x7086b80)
0x56f57de8 : 0x43a8a9 (0x7086d00 0x53d848 0xffffffff 0x0)
0x56f57e38 : 0x44cb7f (0x7048600 0x45d8e0 0x56f57e68 0x9642ac0)
0x56f57e88 : 0x41acd1 (0x7038100 0x4 0x1d 0x2)
0x56f57ec8 : 0x41ad93 (0x7038100 0x0 0x1 0x7036540)
0x56f57ee8 : 0x42174c (0x7038100 0x7723980 0x0 0x6faf204)
0x56f57f38 : 0x41bd73 (0x7038100 0x7723980 0x7036540 0x0)
0x56f57f68 : 0x425d58 (0x7036540 0x1 0x56f57f98 0x4255b1)
0x56f57f98 : 0x425a3a (0x6fca500 0x56f57fdc 0x56f57fc8 0x1aa272)
0x56f57fc8 : 0x1a14fc (0x6fca500 0x0 0x1a40b5 0x85437a0) Backtrace terminated-invalid frame pointer 0
Kernel loadable modules in backtrace (with dependencies):

com.apple.driver.AppleIntelCPUPowerManagement(76.2.0)@0xbab000->0xbc9fff
com.apple.driver.AppleACPIPlatform(1.2.5)@0x71a000->0x757fff
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x5f2000
dependency: com.apple.iokit.IOACPIFamily(1.2.0)@0x5d5000

BSD process name corresponding to current thread: kernel_task

Mac OS version:
9L31a

Kernel version:
Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009;
root:xnu-1228.15.4~1/RELEASE_I386
System model name: iMac9,1 (Mac-F2218FC8)

System uptime in nanoseconds: 78369399191984 unloaded kexts:
com.apple.driver.InternalModemSupport



==========system configuration=========

Model: iMac9,1, BootROM IM91.008D.B08, 2 processors, Intel Core 2 Duo,
2.66 GHz, 4 GB
Graphics: kHW_NVidiaGeForce9400Item, NVIDIA GeForce 9400, sppci_pci_device, 256 MB Memory Module: global_name
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x8E), Broadcom BCM43xx 1.0 (5.10.91.21)
Bluetooth: Version 2.1.9f10, 2 service, 1 devices, 1 incoming serial ports Network Service: Built-in Ethernet, Ethernet, en0 Serial ATA Device: WDC WD6400AAKS-40H2B0, 596.17 GB Serial ATA Device: HL-DT-ST DVDRW GA11N USB Device: Built-in iSight, (null) mA USB Device: hub_device, (null) mA USB Device: Perfection610, (null) mA USB Device: XD-0912-U, (null) mA USB Device: Hub in Apple Extended USB Keyboard, (null) mA USB Device: Apple Extended USB Keyboard, (null) mA USB Device: BRCM2046 Hub, (null) mA USB Device: Bluetooth USB Host Controller, (null) mA USB Device: IR Receiver, (null) mA

Latest Updates.

2010-12-24 22:27:18 -0800: Installed "Security Update 2010-007" (1.0)
2010-12-24 22:27:52 -0800: Installed "Safari" (5.0.3)
2010-12-24 22:28:12 -0800: Installed "iTunes" (10.1.1)
2010-12-24 22:28:33 -0800: Installed "QuickTime" (7.6.9)
2010-12-24 22:28:46 -0800: Installed "Java for Mac OS X 10.5 Update 8" (1.0)

Console messages from today in case they're of use

1/2/11 12:18:22 PM com.apple.launchd[1] (com.apple.newsyslog) Throttling respawn: Will start in 2 seconds
1/2/11 12:21:25 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:25 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:25 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:25 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:25 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:25 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:25 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:25 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:25 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:26 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:26 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:26 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:26 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:26 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:26 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:26 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:26 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:26 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:26 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:26 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:26 PM Mail[893] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:21:59 PM Mail[2885] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 12:26:06 PM Mail[2885] Error loading /Users/odda/Library/ Contextual Menu Items/ToastIt.plugin/Contents/MacOS/ToastIt: dlopen(/ Users/odda/Library/Contextual Menu Items/ToastIt.plugin/Contents/MacOS/
ToastIt, 262): no suitable image found. Did find:
/Users/odda/Library/Contextual Menu Items/ToastIt.plugin/Contents/
MacOS/ToastIt: mach-o, but wrong architecture
1/2/11 12:26:06 PM Mail[2885] Cannot find function pointer pluginFactory for factory 053918F4-2869-11D7-A671-000A27E2DB90 in CFBundle/CFPlugIn 0x18ba0680 </Users/odda/Library/Contextual Menu Items/ToastIt.plugin> (bundle, not loaded)
1/2/11 8:37:05 PM com.apple.launchctl.System[2] fsck_hfs: Volume is journaled. No checking performed.
1/2/11 8:37:05 PM com.apple.launchctl.System[2] fsck_hfs: Use the -f option to force checking.
1/2/11 8:37:07 PM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/ dashboardadvisoryd.plist
1/2/11 8:37:07 PM com.apple.launchd[1] (com.apple.blued) Unknown key for boolean: EnableTransactions
1/2/11 8:37:07 PM com.apple.launchd[1]
(com.apple.RemoteDesktop.PrivilegeProxy) Unknown key for boolean:
EnableTransactions
1/2/11 8:37:07 PM com.apple.launchd[1] (com.apple.usbmuxd) Unknown key for boolean: EnableTransactions
1/2/11 8:37:07 PM com.apple.launchd[1] (org.cups.cupsd) Unknown key:
SHAuthorizationRight
1/2/11 8:37:07 PM com.apple.launchd[1] (org.ntp.ntpd) Unknown key:
SHAuthorizationRight
1/2/11 8:37:07 PM com.apple.launchd[1] (org.x.privileged_startx) Unknown key for boolean: EnableTransactions
1/2/11 8:37:14 PM com.apple.launchd[1] (com.apple.aslmanager) Throttling respawn: Will start in 8 seconds
1/2/11 8:37:16 PM com.apple.launchd[1] (com.apple.aslmanager) Throttling respawn: Will start in 6 seconds
1/2/11 8:37:16 PM com.apple.launchd[1] (com.apple.aslmanager) Throttling respawn: Will start in 6 seconds
1/2/11 8:37:19 PM com.apple.launchd[1] (com.apple.aslmanager) Throttling respawn: Will start in 3 seconds
1/2/11 8:37:22 PM com.apple.SystemStarter[17] Starting up Missing Sync Listener
1/2/11 8:37:22 PM com.apple.SystemStarter[17] The file /Applications/ Stretch Break Pro/Stretch Break Pro does not exist.
1/2/11 8:37:27 PM com.apple.SystemStarter[17] Sun Jan 2 20:37:27 b-ds-imac-g5-2.local Missing Sync Listener[71] <Warning>:
3891612: (CGSLookupServerRootPort) Untrusted apps are not allowed to connect to or launch Window Server before login.
1/2/11 8:37:27 PM com.apple.SystemStarter[17] Sun Jan 2 20:37:27 b-ds-imac-g5-2.local Missing Sync Listener[71] <Error>:
kCGErrorRangeCheck : On-demand launch of the Window Server is allowed for root user only.
1/2/11 8:37:27 PM com.apple.SystemStarter[17] Sun Jan 2 20:37:27 b-ds-imac-g5-2.local Missing Sync Listener[71] <Error>:
kCGErrorRangeCheck : Set a breakpoint at CGErrorBreakpoint() to catch errors as they are returned
1/2/11 8:37:27 PM com.apple.SystemStarter[17] _RegisterApplication(), FAILED TO establish the default connection to the WindowServer,
_CGSDefaultConnection() is NULL.
1/2/11 8:37:34 PM com.apple.launchd[1]
([0x0-0x9009].com.wacom.TabletDriver[90]) Check-in of Mach service failed. PID 90 is not privileged: com.wacom.CoordinatorMessageServer
1/2/11 8:37:52 PM com.apple.launchd[1]
([0x0-0x8008].com.wacom.TabletDriver[89]) Exited: Terminated
1/2/11 8:37:52 PM com.apple.launchd[1] (com.apple.UserEventAgent-
LoginWindow[84]) Exited: Terminated
1/2/11 8:37:52 PM com.apple.launchd[1] (com.wacom.pentablet[82]) Exited with exit code: 255
1/2/11 8:37:52 PM com.apple.launchd[1] (com.wacom.wacomtablet[83]) Exited with exit code: 255
1/2/11 8:37:52 PM com.apple.launchd[93]
(com.apple.AirPortBaseStationAgent) Unknown key for boolean:
EnableTransactions
1/2/11 8:37:52 PM com.apple.launchd[93] (org.x.startx) Unknown key for
boolean: EnableTransactions
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen
1/2/11 8:53:44 PM Mail[162] no entry for mailbox id 1 in the cache; this should never happen

Take it to your nearest Apple Service Provider. A Piece of Hardware is failing or you have a very corrupt OS. could be as simple as dodgy RAM. If it is under warranty take it a Apple store if it is not take it a Authorised Service Provider