well, presscotts are known to have heat issues but thats only really on SKT 478, and yours is LGA775, i think they ironed most of that out. My SKT 478 idles around 50 C. With a room temp of about 31 and an ambient case temp of 34. I think i got lucky on my fan layout so mine are a bit lower than usual.
Yours are respectable tems, nothing too low and nothuing too high. Average all round, which is fine.