there isn't actually a monkey after me

But it does seems that my computer doesn't like linux
After i installed linux mandrake 8.0 on my computer, and i started the X gui, everything seemed to be fine. But when i start re-positioning a window on the screen, or start scrolling, i can actually see the windows being redrawn. It's as if i'm running linux on a 1Hz computer!!! Everything else seems to be fine, but this slow gui redraw problem is really pi**ing me off.
My computer specs:
amd athlon 1.4Ghz
ati radeon 7000
etc....
So anyone got a solution?
