For some reason after installing the drivers for the video card ATI Radeon HD 3870, start lags. Slows scrolling, sometimes flash player and games. I'm tired. At first it was all in 12.04, and recently installed 10.04 and the same thing happens.
Help, please. Maybe it's not the drivers, but in the Ubuntu or Compiz?
10.04 32-bit (kernel 2.6.32-45)
AMD Athlon 64 X2 5200+
ATI Radeon HD 3870
1 GB RAM