I am having this problem with F 10. First I get the infamous message: Could not detect stabilization, waiting 10 seconds. at the beginning of the booting process. then after I initiate startx, I use gnome, all works fine and only for few minutes and the system freezes. At first the mouse freezes, then after 30 seconds or so, the mouse's cursor can move but clicks are ineffective, not even Ctrl+Alt+Backspace, or Ctrl+Alt+Del. I have to do hard reset.
I use a Toshiba Satellite laptop, A135-S2386.