I am running the current Ubuntu and have it as a dual boot on a dell machine(yr
old). Anyway when I start it on Ubuntu the mouse works fine, but if I leave it
on and go away for awhile and come back the mouse if frozen and the keyboard
does not seem to want to work either. If I restart the machine everything comes
back normal.

Oh it does not happen on windows xp at all.

Any help or suggestions would be welcomed.