Ok, I think I sort of have the same problem here. I'm running on a Dell Latitude D800 with an Intel Centrino 1.6Ghz processor. Windows XP pro installed.
A couple days ago my computer messed up, and my Windows XP partition was gone. I don't know what happened but when I popped in the WinXP CD, the partition it was on had a size of 33,000 mb and had 33,000 mb free. So crap, wtf? Anyways, I reinstall Windows, reload all my programs, and when I get to re-installing a game, World of Warcraft, it suddenly says, "Your computer fails to meet the minimum system requirements. Insufficient CPU Speed (learn more)". Now I know this is not possible because it didn't have that warning message before, unless there is something really messed up with my computer.
So I search these forums and find this thread. Can anyone help me out here? Or am I gonna be forced to toss this computer out and get a new one. And don't say something like, "Dell sucks you should get a new one anyways" because that is an opinion not related to the problem and is not welcome...