As of now, my two HDDs are running at 44°C and 46°C. That's again, with the ambient temperature at 33°C. Generally, they run below 40° on a normal day and that's without a front intake fan pulling air through them. With an intake fan in place, they should on a light load run in the high 30°s. Everything on that list is running at about 10°C below what it should be, with the exception of the processor which I imagine is severely overclocked, explaining the high temps. The 9600GT I installed was running mid-30s at idle, but that was with a slightly better cooler. I'd expect from a good manufacturer that the stock cooler should leave you with idle temps around the low 40s on that card.

