to give my BOINC-stats a boost i installed the current fglrx (11-12-1 on debian sid) and kernel version 3.0.3 on my Laptop with a AMD M92 [Mobility Radeon HD 4500/5100 Series]. Everything runs fine until the GPU starts to get OpenCL-work. The mouse starts jumping, keypresses are delayed ... like working on an unaccelerated old laptop.
Can this be normal? I realize that number-crunching has to be quite a stress, but making the desktop unusable seems like there is some problem here.