Amd Turion TL-52 X2 on Amilo PA 1510> No way to change Frequency!

Distribution: Ubuntu x86_64 Newest Stable release
Hardware: Laptop Fujistu-Siemens Amilo Pa 1510
Problem: so the driver correctly detects the two available frequencies (800 & 1600 MHz), any governor will always use the lowest one.
Well in Suse 10.2 i rebuild the kernel with the powernowd module for AMD 64
with powernow! @ this time the cpu always ran on 1.6 GHz but I wasn able to
change the Frequency to 800 MHz.
Now I'm stack I can switch between 800 and 800MHz, whatever i do!

I thought I'm not the only guy with that problem... but how do i fix this problem?
already ran a bios update to 1.07 newest version for my Notebook. All modules a loaded and running. Powernow-k8, powernowd, also the userspace governor
and the cpufreq module!

greetz muskatnuss. /*sry for wrong posting if done > new to this scene*/