Intel iMac stuck in reboot loop

Since the last few days, my 6 month old Intel iMac is stuck in a reboot loop.
Configuration:
Model Name:          iMac
Model Identifier:          iMac12,1
Processor Name:          Intel Core i5
Processor Speed:          2.5 GHz
Number of Processors:          1
Total Number of Cores:          4
OS: 10.6.8 (with patches applied as they become avaliable)
It is connected to a UPS at all times.
I always put it to sleep at night. Sometimes it stays in the Sleep mode for a couple of days (i travel and wife does not use for some time). But it always would "wake" up from Sleep on a keyboard touch. Magic mouse battery died a few days ago, so put in a new pair of battery, had the usual problem of "pairing", fixed that and continued on.
(Coincidentally, it almost also marks where my problems started).
Now, when i press any key, the iMac reboots. And then just before it looks like it will show the wallpaper, it reboots. and this continues on - sometimes 10-15 times. I press the power key and switch it OFF. Press the power key again, no go - stuck in the reboot loop. Run the Apple Hardware Test (exhaustive one included - it reports no issue found). Do a SMC reset (take off the power cord from the back of the iMac for 35 seconds) and put it back. Switch off the mouse and attach a USB mouse and press the Shift key to boot into the Safe mode. This works! Installed Pacifist to check for any non-Apple kernel extensions, none found...
Since AHT reports all fine - can hardware be ruled out?
Could it be the magic mouse? Need to try it (just wary of the reboot loop )?
If it is the mouse, is it covered in the 12 month initial warranty (I am in India)?
Console log reports this line:
08/06/12 7:20:59 PM
configd[13]
Sleep: Success - AC
com.apple.message.domain: com.apple.powermanagement.sleep
com.apple.message.signature: Success
com.apple.message.value: 0
com.apple.message.result: Success
com.apple.message.uuid: A9EDA79D-440F-4CD5-B3FA-5A6451E6677B
and this:
08/06/12 7:20:59 PM
configd[13]
Wake: Drivers Failure - AC - HDEF SATA
com.apple.message.domain: com.apple.powermanagement.wake
com.apple.message.signature: Drivers Failure
com.apple.message.result: Failure
Is it the HDD?
Any/all help is appreciated. I am going to carry it in to an Apple Care tomorrow, but was curious to see what the community had to say.
Thanks,

Well, it is getting odder now...when i read your message and click the console icon on the dock, the iMac just crashed and rebooted!
Here are the console messages just before and after the most recent crash (at 12:07):
08/06/12 11:53:34 PM
Console[919]
asl_file_open_read() failed on path /var/log/DiagnosticMessages/2012.06.04.asl with error Invalid Data Store
08/06/12 11:53:35 PM
Console[919]
asl_file_open_read() failed on path /var/log/DiagnosticMessages/2012.06.04.asl with error Invalid Data Store
08/06/12 11:53:36 PM
Console[919]
asl_file_open_read() failed on path /var/log/DiagnosticMessages/2012.06.04.asl with error Invalid Data Store
08/06/12 11:53:37 PM
Console[919]
asl_file_open_read() failed on path /var/log/DiagnosticMessages/2012.06.04.asl with error Invalid Data Store
09/06/12 12:07:00 AM
com.apple.launchd[1]
*** launchd[1] has started up. ***
09/06/12 12:07:18 AM
com.apple.launchd.peruser.501[87]
(com.apple.ReportCrash) Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self
09/06/12 12:07:21 AM
com.apple.launchd.peruser.501[87]
(com.apple.Kerberos.renew.plist[112]) Exited with exit code: 1
09/06/12 12:07:22 AM
com.hp.messagecenter.launcher[115]
ThrottleProcessIO: throttling disk i/o
09/06/12 12:07:23 AM
com.apple.launchd[1]
(com.apple.xprotectupdater[20]) Exited with exit code: 252
09/06/12 12:08:37 AM
[0x0-0x14014].com.google.Chrome[147]
[0609/000837:INFO:breakpad_mac.mm(177)] Breakpad disabled
09/06/12 12:08:43 AM
[0x0-0x14014].com.google.Chrome[147]
[147:-1273409536:105210075659:ERROR:backend_impl.cc(1148)] Critical error found -8
Here are the console messages just before and after the most recent crash (at 12:07):
Jun  8 23:53:01 localhost Console[919]: asl_file_open_read() failed on path /var/log/DiagnosticMessages/2012.06.04.asl with error Invalid Data Store
Jun  8 23:53:32: --- last message repeated 18 times ---
Jun  8 23:53:32 localhost Console[919]: asl_file_open_read() failed on path /var/log/DiagnosticMessages/2012.06.04.asl with error Invalid Data Store
Jun  8 23:54:02: --- last message repeated 5 times ---
Jun  9 00:07:00 localhost com.apple.launchd[1]: *** launchd[1] has started up. ***
Jun  9 00:07:04 localhost DirectoryService[15]: Improper shutdown detected
Jun  9 00:07:04 localhost blued[17]: Apple Bluetooth daemon started
Jun  9 00:07:12 localhost fseventsd[34]: event logs in /.fseventsd out of sync with volume.  destroying old logs. (14259 14 14295)
Jun  9 00:07:12 localhost fseventsd[34]: log dir: /.fseventsd getting new uuid: 848839F3-1F7D-409B-A5F1-14170B9CD90D
Jun  9 00:07:12 localhost bootlog[41]: BOOT_TIME: 1339180618 0
Jun  9 00:07:15 localhost mDNSResponder[29]: mDNSResponder mDNSResponder-258.21 (May 26 2011 14:40:13) starting
Jun  9 00:07:16 localhost com.apple.usbmuxd[22]: usbmuxd-268.5 on Jan  5 2012 at 03:34:01, running 64 bit
Jun  9 00:07:16 localhost /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow[30]: Login Window Application Started
Jun  9 00:07:16 localhost com.apple.kextd[10]: Can't load /System/Library/Extensions/IOSerialFamily.kext/Contents/PlugIns/InternalModemSu pport.kext - no code for running kernel's architecture.
Jun  9 00:07:16 localhost com.apple.kextd[10]: Failed to load /System/Library/Extensions/IOSerialFamily.kext/Contents/PlugIns/InternalModemSu pport.kext - (libkern/kext) requested architecture/executable not found.
Jun  9 00:07:16 localhost com.apple.kextd[10]: Load com.apple.driver.InternalModemSupport failed; removing personalities.
Jun  9 00:07:16 localhost configd[13]: network configuration changed.
Jun  9 00:07:16 localhost configd[13]: bootp_session_transmit: bpf_write(en1) failed: Network is down (50)
Jun  9 00:07:16 localhost configd[13]: DHCP en1: INIT-REBOOT transmit failed
Jun  9 00:07:18 localhost loginwindow[30]: Login Window Started Security Agent
Jun  9 00:07:18 localhost loginwindow[30]: Login Window - Returned from Security Agent
Jun  9 00:07:18 localhost loginwindow[30]: USER_PROCESS: 30 console
Jun  9 00:07:18 localhost com.apple.launchd.peruser.501[87] (com.apple.ReportCrash): Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self
Jun  9 00:07:21 localhost configd[13]: network configuration changed.
Jun  9 00:07:21: --- last message repeated 2 times ---
Jun  9 00:07:21 localhost com.apple.launchd.peruser.501[87] (com.apple.Kerberos.renew.plist[112]): Exited with exit code: 1
Jun  9 00:07:22 localhost com.hp.messagecenter.launcher[115]: ThrottleProcessIO: throttling disk i/o
Jun  9 00:07:23 localhost XProtectUpdater[20]: Ignoring new signature plist: Not an increase in version
Jun  9 00:07:23 localhost com.apple.launchd[1] (com.apple.xprotectupdater[20]): Exited with exit code: 252
Jun  9 00:07:32 localhost warmd[21]: [fetcher_open_file:936] open("/var/db/dyld/dyld_shared_cache_x86_64") => -1 (errno: 2)
Jun  9 00:07:35 localhost ntpd[19]: time reset +0.205296 s
Jun  9 00:08:37 localhost [0x0-0x14014].com.google.Chrome[147]: [0609/000837:INFO:breakpad_mac.mm(177)] Breakpad disabled
Jun  9 00:08:43 localhost [0x0-0x14014].com.google.Chrome[147]: [147:-1273409536:105210075659:ERROR:backend_impl.cc(1148)] Critical error found -8
Here is the system.log when the iMac was first sought be woken up from sleep:
Jun  8 07:21:47 Manoj-Satis-iMac loginwindow[30]: no spins reported for this wake
Jun  8 07:22:46 Manoj-Satis-iMac loginwindow[30]: loginwindow SleepWakeCallback WILL sleep
Jun  8 07:22:54 Manoj-Satis-iMac loginwindow[30]: loginwindow SleepWakeCallback will power on, Currenttime:6/8/2012 7:22:54.006 AM - Waketime:6/8/2012 7:22:53.330 AM = Deltatime:0.676087976
Jun  8 07:22:54 Manoj-Satis-iMac applepushserviced[125]: <APSCourier: 0x106741520>: Stream error occurred for <APSTCPStream: 0x107315250>: Error Domain=NSPOSIXErrorDomain Code=57 UserInfo=0x107539b80 "The operation couldn’t be completed. Socket is not connected"
Jun  8 07:22:54 Manoj-Satis-iMac applepushserviced[125]: <APSCourier: 0x106741520>: Stream error occurred for <APSTCPStream: 0x107529760>: Error Domain=kCFErrorDomainCFNetwork Code=2 UserInfo=0x107318360 "The operation couldn’t be completed. (kCFErrorDomainCFNetwork error 2.)"
Jun  8 07:22:54 Manoj-Satis-iMac configd[13]: bootp_session_transmit: bpf_write(en1) failed: Network is down (50)
Jun  8 07:22:54 Manoj-Satis-iMac configd[13]: DHCP en1: INIT-REBOOT transmit failed
Jun  8 07:22:54 Manoj-Satis-iMac configd[13]: network configuration changed.
Jun  8 07:22:58 Manoj-Satis-iMac mDNSResponder[29]: DeregisterInterface: Frequent transitions for interface en1 (FE80:0000:0000:0000:E6CE:8FFF:FE5D:48C6)
Jun  8 07:22:58 Manoj-Satis-iMac configd[13]: Sleep: Success - AC - Software Sleep
Jun  8 07:22:58 Manoj-Satis-iMac configd[13]: Wake: Success - AC - EHC2
Jun  8 07:22:58 Manoj-Satis-iMac configd[13]: Hibernate Statistics
Jun  8 07:22:58 Manoj-Satis-iMac configd[13]: network configuration changed.
Jun  8 07:23:05 Manoj-Satis-iMac loginwindow[30]: loginwindow SleepWakeCallback WILL sleep
Jun  8 19:20:45 localhost com.apple.launchd[1]: *** launchd[1] has started up. ***
Jun  8 19:20:48 localhost DirectoryService[15]: Improper shutdown detected
Jun  8 19:20:48 localhost blued[17]: Apple Bluetooth daemon started
Jun  8 19:20:55 localhost fseventsd[34]: event logs in /.fseventsd out of sync with volume.  destroying old logs. (319516 12 362581)
Jun  8 19:20:55 localhost fseventsd[34]: log dir: /.fseventsd getting new uuid: 42A22C99-8FAD-40F4-AC9A-8DE55586FDCF
Jun  8 19:20:55 localhost bootlog[41]: BOOT_TIME: 1339163443 0
Jun  8 19:20:58 localhost mDNSResponder[29]: mDNSResponder mDNSResponder-258.21 (May 26 2011 14:40:13) starting
Jun  8 19:20:58 localhost com.apple.usbmuxd[22]: usbmuxd-268.5 on Jan  5 2012 at 03:34:01, running 64 bit
Jun  8 19:20:59 localhost configd[13]: Sleep: Success - AC
Jun  8 19:20:59 localhost configd[13]: Wake: Drivers Failure - AC - HDEF SATA
Jun  8 19:21:19 localhost com.apple.launchd[1]: *** launchd[1] has started up. ***
Jun  8 19:21:24 localhost DirectoryService[15]: Improper shutdown detected
Jun  8 19:21:25 localhost blued[17]: Apple Bluetooth daemon started
Jun  8 19:21:26 localhost bootlog[41]: BOOT_TIME: 1339163476 0
Jun  8 19:21:29 localhost mDNSResponder[29]: mDNSResponder mDNSResponder-258.21 (May 26 2011 14:40:13) starting
Jun  8 19:21:30 localhost com.apple.usbmuxd[22]: usbmuxd-268.5 on Jan  5 2012 at 03:34:01, running 64 bit
Jun  8 19:21:56 localhost com.apple.launchd[1]: *** launchd[1] has started up. ***
Jun  8 19:22:01 localhost DirectoryService[15]: Improper shutdown detected
Jun  8 19:22:02 localhost blued[17]: Apple Bluetooth daemon started
Jun  8 19:22:03 localhost bootlog[41]: BOOT_TIME: 1339163515 0
Jun  8 19:22:06 localhost mDNSResponder[29]: mDNSResponder mDNSResponder-258.21 (May 26 2011 14:40:13) starting
Jun  8 19:22:33 localhost com.apple.launchd[1]: *** launchd[1] has started up. ***
Jun  8 19:22:38 localhost DirectoryService[15]: Improper shutdown detected
Jun  8 19:22:39 localhost blued[17]: Apple Bluetooth daemon started
Jun  8 19:22:40 localhost bootlog[41]: BOOT_TIME: 1339163552 0
Jun  8 19:22:43 localhost mDNSResponder[29]: mDNSResponder mDNSResponder-258.21 (May 26 2011 14:40:13) starting
Jun  8 19:22:44 localhost com.apple.usbmuxd[22]: usbmuxd-268.5 on Jan  5 2012 at 03:34:01, running 64 bit
Jun  8 19:23:07 localhost com.apple.launchd[1]: *** launchd[1] has started up. ***
Jun  8 19:23:13 localhost DirectoryService[15]: Improper shutdown detected
Jun  8 19:23:14 localhost blued[17]: Apple Bluetooth daemon started
Jun  8 19:23:15 localhost bootlog[41]: BOOT_TIME: 1339163587 0
Jun  8 19:23:18 localhost mDNSResponder[29]: mDNSResponder mDNSResponder-258.21 (May 26 2011 14:40:13) starting
Jun  8 19:23:19 localhost com.apple.usbmuxd[22]: usbmuxd-268.5 on Jan  5 2012 at 03:34:01, running 64 bit
Jun  8 19:23:46 localhost com.apple.launchd[1]: *** launchd[1] has started up. ***
Jun  8 19:23:51 localhost DirectoryService[15]: Improper shutdown detected
Jun  8 19:23:52 localhost blued[17]: Apple Bluetooth daemon started
Jun  8 19:23:53 localhost bootlog[41]: BOOT_TIME: 1339163625 0
Jun  8 19:23:54 localhost fseventsd[34]: event logs in /.fseventsd out of sync with volume.  destroying old logs. (147 9 179)
Jun  8 19:23:54 localhost fseventsd[34]: log dir: /.fseventsd getting new uuid: 09B8A63F-56EF-4D9A-9E5C-A6D27EFCD26C
Jun  8 19:23:56 localhost mDNSResponder[29]: mDNSResponder mDNSResponder-258.21 (May 26 2011 14:40:13) starting
Jun  8 19:25:04 localhost com.apple.kextd[9]: Safe boot mode detected; invalidating system extensions caches.
Jun  8 19:24:28 localhost com.apple.launchd[1]: *** launchd[1] has started up. ***

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