My 2.4c runs much hotter than that -- with the intel hsf unit and not overclocked, I had temps in the low to mid 50c range. I just replaced it with a vantec 7000 and arctic silver, it lowered the temps over 15c to around 36c idle and 44c with 100% cpu and clocked to 2540. I'm happy with the temp now with the vantec hsf.
Bill