[PROBLEM] Crash when updating Database

[namtih]

Try to disable the hardware Watchdog, which was introduced with A5 and seems to cause more trouble than it really helps.
I already did it several weeks ago, so I can't check it anymore, but I think you can just try the following:

Terminal

sudo /etc/init.d/xbmc stop
sudo nano /etc/modules
add an # at the beginning of the line with "bcm2708_wdog"
save the the file
sudo shutdown -h now
powercycle your pi