Hi Linc,
Thanks for responding to my post. FYI Safari updated to v5.7.1, exactly the same problem occured this evening.
Extracts you have requested from the logs for the MBP is set out below.
Extract from system.log
May 11 21:42:38 ****-macbook-pro Safari[1478]: Performance: Please update this scripting addition to supply a value for ThreadSafe for each event handler: "/Library/ScriptingAdditions/SIMBL.osax"
May 11 21:42:39 ****-macbook-pro com.apple.launchd[1] (com.synium.cleanappdaemon[1486]): posix_spawn("/Library/Application Support/CleanApp/CleanApp Daemon.app/Contents/MacOS/CleanApp Daemon", ...): No such file or directory
May 11 21:42:39 ****-macbook-pro com.apple.launchd[1] (com.synium.cleanappdaemon[1486]): Exited with exit code: 1
May 11 21:42:39 ****-macbook-pro com.apple.launchd[1] (com.synium.cleanappdaemon): Throttling respawn: Will start in 10 seconds
May 11 21:42:40 ****-macbook-pro sandboxd[1488]: cvmsComp_i386(1487) deny mach-lookup com.intego.mig_hook
May 11 21:42:45 ****-macbook-pro Safari[1478]: MDS Error: unable to create user DBs in /var/folders/OC/OCSndytXGQCI8MvWul3HRE+++TI/-Caches-//mds
May 11 21:42:47: --- last message repeated 5 times ---
May 11 21:42:47 ****-macbook-pro /System/Library/Frameworks/PubSub.framework/Versions/A/Resources/PubSubAgent.ap p/Contents/MacOS/PubSubAgent[1491]: MDS Error: unable to create user DBs in /var/folders/OC/OCSndytXGQCI8MvWul3HRE+++TI/-Caches-//mds****
May 11 21:42:48: --- last message repeated 8 times ---
May 11 21:42:48 ****-macbook-pro Safari[1478]: InjectEventHandler
May 11 21:42:49 ****-macbook-pro Safari[1478]: Safari Cookies loaded from: /Library/Application Support/SIMBL/Plugins/Safari Cookies.bundle
May 11 21:43:05 ****-macbook-pro WebProcess[1480]: INSERT-HANG-DETECTED: Tx time:4.436137, # of Inserts: 3, # of bytes written: 111793, Did shrink: NO
May 11 21:43:13 ****-macbook-pro WebProcess[1480]: INSERT-HANG-DETECTED: Tx time:7.939700, # of Inserts: 3, # of bytes written: 101036, Did shrink: NO
May 11 22:09:02 localhost fseventsd[33]: event logs in /.fseventsd out of sync with volume. destroying old logs. (17775 22 17851)
May 11 22:09:03 localhost fseventsd[33]: log dir: /.fseventsd getting new uuid:
May 11 22:09:04 localhost bootlog[41]: BOOT_TIME: 1336738120 0
May 11 22:09:04 localhost DirectoryService[38]: Improper shutdown detected
Extract from kernel.log
May 11 21:37:55 ****-macbook-pro kernel[0]: ::dequeueData: - Interrupted!
May 11 21:37:55 ****-macbook-pro kernel[0]: ::dataReadComplete: Read complete io error.
May 11 21:38:13 ****-macbook-pro kernel[0]: ::acquirePort: - Start read.!
May 11 22:09:02 localhost kernel[0]: npvhash=4095
May 11 22:09:02 localhost kernel[0]: PAE enabled
May 11 22:09:02 localhost kernel[0]: 64 bit mode enabled
May 11 22:09:02 localhost kernel[0]: Darwin Kernel Version 10.8.0: Tue Jun 7 16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386
May 11 22:09:02 localhost kernel[0]: vm_page_bootstrap: 949518 free pages and 25330 wired pages
May 11 22:09:02 localhost kernel[0]: standard timeslicing quantum is 10000 us
May 11 22:09:02 localhost kernel[0]: mig_table_max_displ = 73
May 11 22:09:02 localhost kernel[0]: AppleACPICPU: ProcessorId=0 LocalApicId=0 Enabled
May 11 22:09:02 localhost kernel[0]: calling mpo_policy_init for TMSafetyNet
May 11 22:09:02 localhost kernel[0]: Security policy loaded: Safety net for Time Machine (TMSafetyNet)
May 11 22:09:02 localhost kernel[0]: calling mpo_policy_init for Quarantine
May 11 22:09:02 localhost kernel[0]: Security policy loaded: Quarantine policy (Quarantine)
May 11 22:09:02 localhost kernel[0]: calling mpo_policy_init for Sandbox
May 11 22:09:02 localhost kernel[0]: Security policy loaded: Seatbelt sandbox policy (Sandbox)
May 11 22:09:02 localhost kernel[0]: Copyright (c) 1982, 1986, 1989, 1991, 1993
May 11 22:09:02 localhost kernel[0]: The Regents of the University of California. All rights reserved.
May 11 22:09:02 localhost kernel[0]: MAC Framework successfully initialized
May 11 22:09:02 localhost kernel[0]: using 16384 buffer headers and
4096 cluster IO buffer headers
May 11 22:09:02 localhost kernel[0]: IOAPIC: Version 0x11 Vectors 64:87
May 11 22:09:02 localhost kernel[0]: ACPI: System State [S0 S3 S4 S5] (S3)
May 11 22:09:02 localhost kernel[0]: PFM64 0xf10000000, 0xf0000000
May 11 22:09:02 localhost kernel[0]: [ PCI configuration begin ]
May 11 22:09:02 localhost kernel[0]: console relocated to 0xf10010000
May 11 22:09:02 localhost kernel[0]: PCI configuration changed (bridge=2 device=1 cardbus=0)
May 11 22:09:02 localhost kernel[0]: [ PCI configuration end, bridges 5 devices 18 ]
May 11 22:09:02 localhost kernel[0]: AppleIntelCPUPowerManagement: (built 16:44:45 Jun 7 2011) initialization complete
May 11 22:09:02 localhost kernel[0]: mbinit: done (64 MB memory set for mbuf pool)
May 11 22:09:02 localhost kernel[0]: USBF: 0.345 AppleUSBOHCI[0x8455800]::InitializeOperationalRegisters Non-NULL hcDoneHead: 0xadb58480
May 11 22:09:02 localhost kernel[0]: rooting via boot-uuid from /chosen:
Most recent crash log
Crashed Thread: 2
Thread 2 Crashed:
Thread 2 crashed with X86 Thread State (64-bit):
0x7fff82659000 - 0x7fff82664fff com.apple.CrashReporterSupport 10.6.7 (258) /System/Library/PrivateFrameworks/CrashReporterSupport.framework/Versions/A/Cra shReporterSupport
Look forward to hearing from you. Thanks again for your assistance.