2nd hard system crash in as many days. Snow Leopard system stability is pretty bad. I don't think I ever saw a full lock-up on Leopard 10.5, very infrequenet on Tiger 10.4.

On the plus side, full system crashes will probably distract me from the now-ruined Exposé.

Maybe I can downgrade back to 10.5? Ugh.

Interval Since Last Panic Report: 28807 sec Panics Since Last Report: 1 Anonymous UUID: 46FEE2D6-CFAB-XXXX-XXXX-XXXXXXXXXXXX

Thu Sep 10 14:32:18 2009
panic(cpu 0 caller 0x226297): "thread_invoke: preemption_level -1, possible cause: unlocking an unlocked mutex or spinlock"@/SourceCache/xnu/xnu-1456.1.25/osfmk/kern/sched_prim.c:1471
Backtrace (CPU 0), Frame : Return Address (4 potential args on stack)
0x5b65be28 : 0x21acfa (0x5ce650 0x5b65be5c 0x223156 0x0)
0x5b65be78 : 0x226297 (0x5864e8 0xffffffff 0x586480 0x225b6c)
0x5b65bef8 : 0x22699d (0x6dfc01c 0x6dfc01c 0x5b65bf58 0x232085)
0x5b65bf68 : 0x226a08 (0x5474ba 0x6fb3940 0x0 0x84b720)
0x5b65bf88 : 0x547576 (0x5474ba 0x6fb3940 0x0 0x1c03)
0x5b65bfc8 : 0x29c68c (0x6fb3940 0x0 0x10 0x8fedca4)

BSD process name corresponding to current thread: kernel_task

Mac OS version:
10A432

Kernel version:
Darwin Kernel Version 10.0.0: Fri Jul 31 22:47:34 PDT 2009; root:xnu-1456.1.25~1/RELEASE_I386
System model name: MacBookPro3,1 (Mac-F4238BC8)