First off how these cooling programs work: newer processors have a special HLT <halt> instruction which tells them not to do anything, which causes them not to heat up, what these cooling programs do is use all available cycles to send HLT commands, so the system shows up as 100% cpu utilization all the time. You should see the temps drop despite the 100% cpu usage, its just the nature of how these programs work, they only grab cycles that no other program uses (they run only on idle cycles). For some strange reason none of these work with Athlon/Duron processors, but at any rate your situation is completely normal, as long as the temps are dropping everything is fine.