I recently switched from WinXP32bit to Windows7. While under XP poclbm took about 5% CPU Time of one core, now it uses one core with 100%. Is there a specific reason for that?
I now use AMD/ATI OpenCL1.1 and poclbm with
poclbm.exe -device=0 -v -w128 -f 60. MHash/s is about the same I had with XP.