I had a similar problem - in my case, my machine froze when it went to the power-save mode. So I had to set the power-save mode to off in the BIOS. Then it was all peachy again.
I just upgraded to 7.1 (kernel v. 2.4.2) from 7.0 (kernel v. 2.2.19-7.0.8). Now my computer will freeze after running the screensaver for a while in X. Is this common (is there a fix) or just me (time to tweak)?
Thanks, Drew Hunt pinowudi yahoo com