Weird system crash

Has anyone come up with theories/solutions for the above?

I am having the same exact problem affecting my 2 GHz/2 GB SDRAM MacBook running 10.5.1 ... it happens with alarming frequency, at least once every few days. Any help would be appreciated.

 

I have a similar issue (and I'm still on Leopard), and the only clue I have is: Time Machine and remote disks.

Sometimes the connection between my Macs and the small NAS from Iomega that deals with both the Time Machine backups and remote disks will "hang". It's hard to describe it, but it simply drives the Mac(s) crazy (and myself too!). Things hang, refuse to get force-quitted, reboot/shutdown doesn't work any more, and so on. The errors I get are pretty much what @kbmb has posted here. Sadly they refuse to go away.

My only solution right now is to disconnect the NAS (or turn it down), relaunch the Mac, wait until it disconnects all remote drives and gives up on insisting to do the backup, and returns to "normality". All errors disappear as if by magic. This is quite easy to replicate, and it happens at least with two of my Macs (one iMac and one MacBook) very consistently.

A few hints are also here: http://discussions.apple.com/thread.jspa?threadID=1754704 I'll try to redo my Spotlight indexes to see if that helps, but I seriously suspect it's just another of those helpful hints that will lead to nowhere...