Linux freezes randomly

[Donn]

> My kubuntu seems to work right, but sometimes it just gets frozen. There
> are two places where it can freeze: most normally when booting. But
> sometimes it happens when I'm already in KDE. First music stops to sound.
> Then only mouse moves but the rest of Xorg is frozen (it doesn't answer to
> mouse clicks, nor keyboard, not even mouse overs) and finally mouse
> freezes. This could be something related to ATI propietary driver though, I
> don't know.
In case it helps you: this happens to me when the cables for the hard-drives 
have become loose. I switch off and then push them all hard into the 
motherboard and the back of the drives. I also check the video-card is seated 
properly, and any other cards.

This works everytime and I am up and running again until the next time a loose 
IDE cable freezes the machine. In fact this is the only reason I have never 
gone beyond 90 days uptime -- damn cables!

hth
/d