cpu useage of 90-100% (or well below!) will always result in a cpu temp rise - unless you've one hell of a cooler, cpu or both! in either case I want one!
Realistically, what are you using to measure the temp and what settings are you using (where are you measuring it from)?
i first noticed it when i downloaded game booster to free up a little more ram for gaming and it also shows cpu temp, gpu temp, mainboard temp and harddisk temp, as well as fan speed though i'm not sure which fan it is talking about.
imagine overclocking this thing if it somehow wasn't a glitch!!!!