Missing Hard Drive Space!

[mumbo]

I have a new powermac with a 250GB hard drive. I had a couple of software crashes the other day (during a Norton AV scan) and now I notice that there is only 48 GB available on the drive! I only have about 40 GB of stuff on it - Apps, Music etc. - and just the other day (before the crash) the available space was closer to 180 GB. So I've got a bunch of space missing and I can't seem to find it!
I've emptied the recovery stuff from the Trash, and erased free space with Disk Utility with no result (also shows no problems with a verification check). Yelling nor gentle coaxing didn't seem to help either.
Anyone have any suggestions?
Thanks.

 

[ChrisFromCanada]

Suggestions?

Never use anything made by Norton on a Mac ever again?

 

[robbieduncan]

Reboot if you haven't. If an application went totally out of control and used up massive amounts of RAM you may have huge amounts of swap files. Even once the memory is no longer needed these files are not removed until you restart.

Other than that check for massive log files?