Fedora 16 Linux D600 Clockspeed stuck at 600MHZ

Dell D600 laptop is reporting cpuMHz: 600MHz in /proc/cpuinfo. In order to set to appropriate speed(1600MHz) needed to:

- Install kernel-tools.
- nano /etc/sysconfig/cpupower and set both both options to performance.
- To set immediatly ran ' cpupower frequency-set -g performance'

Fan started spinning! 'cat /proc/cpuinfo' shows cpuMHz 1600!

Documentation and googling says something about 3rd Party power cords cause this and sometimes cpu gets stuck. System had been running slow at times when under load so not "ondemand" setting may have not been working.

Also,

Setting 'processor.ignore_ppc=1' as command line option on boot reduced fan spinup and allowed processor to set speed ondemand.

Notes/Acknowledgment:
"How Can I Disable CPUscaling In Fedora 16 - Post #3" - http://forums.fedoraforum.org/showthread.php?t=272109

"CPU Frequency Scaling In The Linux Kernel - CPU Throttled Down To 800 After 15-30 Mins" - http://comments.gmane.org/gmane.linux.kernel.cpufreq/6974