I've been tracking down where all my disk space is being used and I found out that this folder:
C:\Documents and Settings\All Users\ Application Data\Symantec\Symantec AntiVirus Corporate Edition\7.5
Is taking up 28 gigs (on my only 80 gig harddrive). The files taking up all that space are 500MB - 1500MB files called things like: 00000074, 0000007A, 000000D8. There are 27 of these files and they go back for more than 1 year.
My question is identical to this one, but the selected answer doesn't work for me. After lowering the cache limit from 1800MB to 500MB and clicking to clear the cache, the files are still there, so the answer didn't work for me.
Could this be caused by killing virus scans early? I don't have permission to kill the process, but my computer becomes useless while its scanning, so I always restart.