Hi,
It happens very often what i am working with running kernel 2.6 and suddenly when i am opening the konqueror or any other file browser i get an error that says the filesystem is mounted read-only.
But 5 Minutes ago it worked. I then cant even shutdown any more because i only get something like:
ext3 error: filesystem is read-only.

What could this cause. Is there any known bug?

My Hardware:
HD: Western Digital wd1200jb
Promise 20265/20276 Chip