still having this issue with: 2.6.15-19-k7 [4294959.425000] powernow-k8: Found 1 AMD Athlon 64 / Opteron processors (version 1.50.4) [4294959.425000] powernow-k8: MP systems not supported by PSB BIOS structure -- powernow-k8 refuses to load https://launchpad.net/malone/bugs/33116