already tried smbios stuff, but for sure i ve repeat step-by-step your post, hmm..., stil 1.81, it seems to be problem of the chameleon itself, the install cd has st like "v.5.0.132 dfe... chameleon pre..." and sysctl report max and min both speed 2e9, beside my CH 2rc4 reports min 544e6 and max 1.81e9 (after install power manager, before max 1.81 & min 1.81)