I think you mean GPU diode instead of cpu. And well, its normal for the GPU to go that high. Mine goes to 80 when I'm doing something really intensive stuff like games. But other than that, it pretty much stays at 65-70C.
The hard drive though, is a differnt story, because mine never went as high as 40 even. pretty much all the time, it stays at 32-38ish. Even when I downloaded a 1.3 Gig file, it was around 39 so I don't know about your hard drive.
Moreover, the penryn chip did not "fix" this issue, rather, it cooled it by a little bit.