Linc - hope this what you wanted, there is a lot of it !
Mar 15 18:51:43 iMac bootlog[56]: BOOT_TIME: 1331837490 0
I've included the system log from momment of switch on as well as the 10mins it took to boot -
Mar 15 18:51:30 localhost com.apple.launchd[1]: *** launchd[1] has started up. ***
Mar 15 18:51:37 localhost DirectoryService[11]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:37 localhost configd[14]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:37 localhost diskarbitrationd[13]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:37 localhost blued[17]: Apple Bluetooth daemon started
Mar 15 18:51:37 localhost blued[17]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:37 localhost mDNSResponder[18]: mDNSResponder mDNSResponder-258.21 (May 26 2011 14:40:13) starting
Mar 15 18:51:37 localhost mDNSResponder[18]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:37 localhost securityd[25]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:38 localhost kextd[10]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:38 localhost configd[14]: network configuration changed.
Mar 15 18:51:38 iMac configd[14]: setting hostname to "iMac.local"
Mar 15 18:51:38 iMac makequeues[27]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:40 iMac airportd[28]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:40 iMac airportd[28]: failed to snag beacon
Mar 15 18:51:43 iMac bootlog[56]: BOOT_TIME: 1331837490 0
Mar 15 18:51:43 iMac DumpPanic[52]: Error getting a reference to IODeviceTree:/options
Mar 15 18:51:43 iMac com.apple.DumpPanic[52]: 2012-03-15 18:51:43.093 DumpPanic[52:107] Error getting a reference to IODeviceTree:/options
Mar 15 18:51:43 iMac com.apple.launchd[1] (com.apple.DumpPanic[52]): Exited with exit code: 1
Mar 15 18:51:43 iMac mds[44]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:43 iMac socketfilterhelper[59]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:43 iMac cupsd[33]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:43 iMac usbmuxd[38]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:43 iMac com.apple.usbmuxd[38]: usbmuxd-268.5 on Jan 5 2012 at 03:34:01, running 64 bit
Mar 15 18:51:43 iMac /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow[45]: Login Window Application Started
Mar 15 18:51:43 iMac coreservicesd[30]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:43 iMac krb5kdc[35]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:43 iMac sandboxd[74]: krb5kdc(35) deny file-read-data /usr/share/icu/icudt40l.dat
Mar 15 18:51:43: --- last message repeated 5 times ---
Mar 15 18:51:43 iMac loginwindow[45]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:44 iMac hidd[48]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:44 iMac CoreRAIDServer[54]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:44 iMac ifcstart[47]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:44 iMac fontd[79]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:44 iMac fontworker[80]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:44 iMac lsregister[81]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:44 iMac com.apple.coreservicesd[30]: 2012-03-15 18:51:44.895 lsregister[81:903] _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:51:45 iMac configd[14]: network configuration changed.
Mar 15 18:51:45 iMac configd[14]: setting hostname to "iMac.home"
Mar 15 18:51:47 iMac XProtectUpdater[36]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:52:32 iMac mdworker[87]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:52:36 iMac lsregister[89]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:52:36 iMac com.apple.coreservicesd[30]: 2012-03-15 18:52:36.161 lsregister[89:903] _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:52:36 iMac mdworker[88]: _CFGetHostUUIDString: unable to determine UUID for host. Error: 35
Mar 15 18:52:36 iMac configd[14]: InterfaceNamer: timed out waiting for IOKit to quiesce
Mar 15 18:52:36 iMac configd[14]: InterfaceNamer: Busy services :
Mar 15 18:52:36 iMac configd[14]: InterfaceNamer: iMac11,2 [1]
Mar 15 18:52:36 iMac configd[14]: InterfaceNamer: iMac11,2/AppleACPIPlatformExpert [2]
Mar 15 18:52:36 iMac configd[14]: InterfaceNamer: iMac11,2/AppleACPIPlatformExpert/CPU1@1 [1]
Mar 15 18:52:36 iMac configd[14]: InterfaceNamer: iMac11,2/AppleACPIPlatformExpert/CPU1@1/AppleACPICPU [1]
Mar 15 18:52:36 iMac configd[14]: InterfaceNamer: iMac11,2/AppleACPIPlatformExpert/AppleEFIRuntime [1]
Mar 15 18:52:45 iMac WindowServer[78]: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
Mar 15 18:52:45 iMac com.apple.WindowServer[78]: Thu Mar 15 18:52:45 iMac.home WindowServer[78] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
Mar 15 18:52:49 iMac loginwindow[45]: Login Window Started Security Agent
Mar 15 18:52:50 iMac loginwindow[45]: Login Window - Returned from Security Agent
Mar 15 18:52:50 iMac loginwindow[45]: USER_PROCESS: 45 console
Mar 15 18:52:51 iMac com.apple.launchd.peruser.501[90] (com.apple.ReportCrash): Falling back to default Mach exception handler. Could not find: com.apple.ReportCrash.Self
Mar 15 18:52:54 iMac fseventsd[49]: check_vol_last_mod_time:XXX failed to get mount time (25; &mount_time == 0x10057f8b8)
Mar 15 18:52:54 iMac fseventsd[49]: log dir: /Volumes/HD-HBU2/.fseventsd getting new uuid: **********************************
Mar 15 18:52:58 iMac com.apple.launchd.peruser.501[90] (com.apple.Kerberos.renew.plist[139]): Exited with exit code: 1
Mar 15 18:53:07 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x14026b0 of class NSCFArray autoreleased with no pool in place - just leaking
Mar 15 18:53:07 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x1303a20 of class NSCFData autoreleased with no pool in place - just leaking
Mar 15 18:53:08 iMac iTunesHelper[157]: _AMDDeviceAttachedCallbackv3 (thread 0x7fff712abcc0): Device 'AMDevice 0x1001173c0 {UDID = 781fd04c4c126ea3e3279cc9f334e794100a1f91, device ID = 1, location ID = 0xfd130000, product ID = 0x1294}' attached.
Mar 15 18:53:28 iMac com.trusteer.rapport.rapportd[142]: objc[142]: Class kukai_status_icon is implemented in both /Library/Rapport/bin/RapportKukai.dylib and /Library/Rapport/bin/RapportDaishi.dylib. One of the two will be used. Which one is undefined.
Mar 15 18:53:28 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x1355eb0 of class NSCFString autoreleased with no pool in place - just leaking
Mar 15 18:53:28 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x7a9ca0 of class NSPathStore2 autoreleased with no pool in place - just leaking
Mar 15 18:53:28 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x7a9eb0 of class NSConcreteData autoreleased with no pool in place - just leaking
Mar 15 18:53:28 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x1355e40 of class NSCFArray autoreleased with no pool in place - just leaking
Mar 15 18:53:28 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x1355f60 of class NSCFData autoreleased with no pool in place - just leaking
Mar 15 18:53:28 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x1355db0 of class NSCFData autoreleased with no pool in place - just leaking
Mar 15 18:53:28 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x141bda0 of class NSCFData autoreleased with no pool in place - just leaking
Mar 15 18:53:28 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x141bf20 of class NSCFData autoreleased with no pool in place - just leaking
Mar 15 18:53:29 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x715f90 of class NSCFString autoreleased with no pool in place - just leaking
Mar 15 18:53:29 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x793640 of class NSPathStore2 autoreleased with no pool in place - just leaking
Mar 15 18:53:29 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x715fe0 of class NSConcreteData autoreleased with no pool in place - just leaking
Mar 15 18:53:29 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x7ab180 of class NSCFArray autoreleased with no pool in place - just leaking
Mar 15 18:53:29 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x14026b0 of class NSCFArray autoreleased with no pool in place - just leaking
Mar 15 18:53:29 iMac rapportd[142]: *** __NSAutoreleaseNoPool(): Object 0x1303aa0 of class NSCFData autoreleased with no pool in place - just leaking
Mar 15 18:53:35 iMac [0x0-0xc00c].com.hp.HPEventHandler[147]: on write, error=-1
Mar 15 18:53:42: --- last message repeated 1 time ---
Mar 15 18:53:42 iMac iTunes[151]: _AMDDeviceAttachedCallbackv3 (thread 0xb0617000): Device 'AMDevice 0x1b046b70 {UDID = 781fd04c4c126ea3e3279cc9f334e794100a1f91, device ID = 1, location ID = 0xfd130000, product ID = 0x1294}' attached.
Mar 15 18:53:43 iMac ath[189]: _AMDDeviceAttachedCallbackv3 (thread 0x7fff712abcc0): Device 'AMDevice 0x10191a780 {UDID = 781fd04c4c126ea3e3279cc9f334e794100a1f91, device ID = 1, location ID = 0xfd130000, product ID = 0x1294}' attached.
Mar 15 18:53:45 iMac com.apple.Finder[121]: Dropbox: Entered INJECT_pthread_entry
Mar 15 18:53:45 iMac com.apple.Finder[121]: Dropbox: Installing event loop timer
Mar 15 18:53:45 iMac com.apple.Finder[121]: Dropbox: proc: 0x1006d6e5b
Mar 15 18:53:45 iMac com.apple.Finder[121]: Dropbox: upp: 0x1006d6e5b
Mar 15 18:53:45 iMac com.apple.Finder[121]: Dropbox: InstallEventLoopTimer: 0x7fff891e4dd8
Mar 15 18:53:45 iMac com.apple.Finder[121]: Dropbox: GetMainEventLoop: 0x7fff891e4c41
Mar 15 18:53:45 iMac com.apple.Finder[121]: Dropbox: timer installed!
Mar 15 18:53:45 iMac com.apple.Finder[121]: Dropbox: Loading /Library/DropboxHelperTools/Dropbox_u501/DropboxBundle.bundle/Contents/MacOS/Dr opboxBundle
Mar 15 18:53:45 iMac com.apple.Finder[121]: Dropbox: dlopen returned: 0x114801850
Mar 15 18:53:45 iMac com.apple.Finder[121]: module initializer in main thread?: 1
Mar 15 18:53:45 iMac iTunes[151]: _GCDSearchPthreadOnceRoutine (thread 0xa0824540): Looked up GCD symbols, got addresses: 978d5580, GCD_AVAILABLE is 1
Mar 15 18:53:49 iMac AppleMobileDeviceHelper[227]: _AMDDeviceAttachedCallbackv3 (thread 0xa0824540): Device 'AMDevice 0x2e0da50 {UDID = 781fd04c4c126ea3e3279cc9f334e794100a1f91, device ID = 1, location ID = 0xfd130000, product ID = 0x1294}' attached.
Mar 15 18:53:59 iMac AppleMobileBackup[257]: WARNING: Backing up 781fd04c4c126ea3e3279cc9f334e794100a1f91
Mar 15 18:53:59 iMac [0x0-0xf00f].com.apple.iTunes[151]: 2012-03-15 18:53:59.640 AppleMobileBackup[257:903] WARNING: Backing up 781fd04c4c126ea3e3279cc9f334e794100a1f91
Mar 15 18:53:59 iMac AppleMobileBackup[257]: _AMDDeviceAttachedCallbackv3 (thread 0x7fff712abcc0): Device 'AMDevice 0x101813730 {UDID = 781fd04c4c126ea3e3279cc9f334e794100a1f91, device ID = 1, location ID = 0xfd130000, product ID = 0x1294}' attached.
Mar 15 18:54:10 iMac MDCrashReportTool[258]: _AMDDeviceAttachedCallbackv3 (thread 0x7fff712abcc0): Device 'AMDevice 0x100326500 {UDID = 781fd04c4c126ea3e3279cc9f334e794100a1f91, device ID = 1, location ID = 0xfd130000, product ID = 0x1294}' attached.
Mar 15 18:54:11 iMac AppleMobileSync[260]: _AMDDeviceAttachedCallbackv3 (thread 0xa0824540): Device 'AMDevice 0x315330 {UDID = 781fd04c4c126ea3e3279cc9f334e794100a1f91, device ID = 1, location ID = 0xfd130000, product ID = 0x1294}' attached.
Mar 15 18:54:12 iMac AppleMobileSync[260]: _AMDDeviceAttachedCallbackv3 (thread 0xa0824540): Device 'AMDevice 0x316620 {UDID = 781fd04c4c126ea3e3279cc9f334e794100a1f91, device ID = 1, location ID = 0xfd130000, product ID = 0x1294}' attached.
Mar 15 18:54:16 iMac SyncServer[178]: [110fe0] |SyncManager|Warning| removing client com.apple.Mail.Notes from plan because I couldn't send it a sync alert
Mar 15 18:54:16 iMac SyncServer[178]: [110fe0] |SyncManager|Warning| removing client com.apple.Mail from plan because I couldn't send it a sync alert
Mar 15 18:56:45 iMac /usr/libexec/hidd[48]: Timeout waiting for IOKit to be quiet
Mar 15 18:59:25 iMac ath[189]: _AMDDeviceAttachedCallbackv3 (thread 0x7fff712abcc0): Device 'AMDevice 0x100506e20 {UDID = 781fd04c4c126ea3e3279cc9f334e794100a1f91, device ID = 1, location ID = 0xfd130000, product ID = 0x1294}' attached.
Mar 15 19:00:45 iMac WindowServer[78]: Timeout waiting for IOKit to be quiet
Mar 15 19:01:43 iMac SystemStarter[39]: IOKitWaitQuiet: -536870186
Mar 15 19:01:43 iMac com.apple.SystemStarter[39]: Starting HP Trap Monitor
I couldn't find the kernal.log within Console
There were no System Diagnostics crash or panic logs