I'm having a problem with powernow-k8 intermittent failures and would
appreciate some help.

system:

  * Athlon 64 2800+, stepping 10
  * Chaintech K8M800 socket 754 (no Cool'n'Quiet support)
  * linux-2.6.12-rc5 (+ powernow-k8 1.40.2 patch)


symptoms:

    After working fine for a while (several minutes to several hours),
cpufreq seems to get into a bad state where:

     * change pending bit set / stuck kernel messages appear

     * cat of /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
hangs for a few seconds and finally returns "<unknown>".  However a cat
of /proc/cpuinfo works and seems to show the correct cpu MHz.

     * reloading powernow-k8 module fails, with "change pending bit stuck"

     * the problem can sometimes be provoked by stopping and starting
       powernowd

Attached is some kernel output with "cpufreq.debug=3".  The debug output
doesn't seem to provide much information at the point of failure.

--John