I recently installed f10 and have had an issue where after using the system for about an hour the display starts to update slowly (the mouse jerks around the screen, scrolling in firefox is very jerky, and it can't even keep up with my typing). When I restart performace goes back to normal until another hour passes and it degrades again.
I am using metacity as a compositor, but I have the same problem with compiz-fusion or with no compositing. I have also tried both the 64 and 32-bit flavours, and saw no difference. These problems show up on completely clean installs, with all updates applied and nothing else installed.
When these problems are exhibited I can see that I'm not using an swap and I have about a gig of free ram and my processor usage is at ~2%. When I run glxgears I get ~1100 fps, but the display is choppy.
I'm using a lenovo t61: t7500, 4gigs of ram, x3100, external monitor(1680x1050)
Thanks for any help with this issue.