Description of problem:
KDE Power Management displays an empty "CPU frequency scaling policy" list on the edit profile screen.

Version-Release number of selected component (if applicable):
4.3.5-3.fc12

How reproducible:
This bug can be reproduced on any machine with a 

Steps to Reproduce:
1. Go to System Settings, Advanced tab, Power Management.
2. Choose Edit Profiles, select any profile and CPU And System tab.
  
Actual results:
CPU Frequency Scaling Policy list is empty

Expected results:
CPU Frequency Scaling Policy list contains the list of the available governors.

Additional info:
$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
ondemand userspace performance
$ cat /sys/devices/system/cpu/cpu1/cpufreq/scaling_available_governors
ondemand userspace performance

The possible reason is an issue with the HAL

$ dbus-send --system --print-reply --dest=org.freedesktop.Hal /org/freedesktop/Hal/devices/acpi_CPU0 org.freedesktop.DBus.Introspectable.Introspect | grep '<interface' 
  <interface name="org.freedesktop.DBus.Introspectable"> 
  <interface name="org.freedesktop.Hal.Device"> 

CPU does not implement the org.freedesktop.Hal.Device.CPUFreq interface. But I am not an experienced system programmer and I am not sure if this is a bug. I'm going to submit the bug for the KDE only.