Have you recently had to clean up your hard drive?

I have a 20 GB (I am trying to get an 80 GB), but recently I ran out of space on C:. If you remember, I have my hard drive really stringently partitioned, and C: is ONLY for system files. I just uninstalled about 15 programs, dumped IE's cache, and removed a s***load of temp files.

This is the first time I actually ran out of space on my hard drive!