30° C can be an expected temperature for case air, certainly not for hard disk. Hard disks generally cruise at and above the temperatures you are describing, so you're fine.
quote:
Originally posted by philipe
I was just wondering if these high temperatures
Those temperatures aren't high, they are actually a bit lower that average.
Windows crashing may be caused by overheating of the CPU or GPU (most likely not according to your avatar), though check the temperatures. Like MenthiX said, an exhaust fan for your case might be useful.