Noob question: Solving crash problems

[IriDium]

The issue seems to be:
init: xbian-xbmc-bridge main process (1350) terminated with status 1
init: xbian-xbmc-bridge main process ended, respawning

as there are multiple entries in dmesg.
There's nothing to suggest a filesystem problem.

I would remove "comment out" your Media Server "additions", reboot and check dmesg every 30 minutes to see if the bridge is respawning. Once is OK.

Another option is to disable your addons and see if that improves things.

I'm running exactly the same Xbian version (unmodified) and I'm not seeing this issue at all - so it must be something specific to your machine.