[ubuntu] CPU speed stuck at 800 Mhz

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http://ubuntuforums.org – A couple of days ago I noticed a lot of my scripts running a fair bit slower than expected on my Serp7 with 13.04 and 3.8.0-21-generic kernel. I think I've finally been able to determine the reason, but I have no idea how to fix it. I did sudo apt-get cpufrequtils and found out that my cpu speed seems to be stuck at 800 Mhz even with a lot of stuff running using 100% cpu when the cpu governor was set to "ondemand". This made no sense so I forced it into "performance" by doing cpufreq-set -r -g performance, but the cpu speed still seems stuck at 800 Mhz on all the cores a (Hardware)