Dont want to hijack thread but, im in uk and i have similair problem, the stock cooler is just bad.
at idle here you go;
at load prime 95 64bit;
i have 3 case fans, one apache at the front, one sharkoon blowing at cpu from the side, and one cooler master sucking out at the back. not to mention powersupply.
i just took the case out, undone it all and checked and i can assure you its locked. the stock cooler is just crap.