hi there,
I'm not sure this is going to work for you, however on my linux rig I was affected by the 100% bug when using Catalyst >12.1 and AMD APP 2.6. I noticed on a quick glance that the problem was pyOpenCL(I got suspicious when running hashkill, which did not have the bug). So I tried using an older version of pyOpenCL which I compiled myself, and it resolved the issue without any impact on my mining performance. I then had a friend mining on windows who complained about the 100% issue himself, and I told him that using a selfcompiled pyOpenCL did solve the problem. He then went on and installed python, a self built windows version of pyOpenCL and ran poclbm himself on windows. (manually without GUIminer). this solved the 100% bug for him as well, without hurting performance. So you might just try doing that if you have some beer and experience to do this. However, no guarantee here, since I only have what my pal reported back to me ...
Phoenix 1.7.3 win32 exe reports that it is using pyOpenCL 2011.1beta; I believe 0.98 was used in older versions, so this may help multi-cpuers. (
Note: Jedi95 fixed, no difference in hashrate)
It seems that early reports "11.12 solves CPU bug" may have been premature, as we can see many still have the problem depending on OS, hardware, and miner.