hard disk problem


I have an iMac G5 2.0GHz with a 160GB hard disk.

As I see and also, I expected the total size of my files at the moment is not bigger than 30GB. But at "Get Info" of Macintosh HD I just find out that my computer has only 3,71GB available, instead of about 150GB that I expected.

Have you got any idea? It's a big need to install Adobe CS2 and I don't have enough space to...
There must be something you've installed that is taking up all that space. Perhaps movies? Or music? Documents? Does anyone else use the computer?

I would just try using the Get Info on folders, starting with the folders in your home directory, to see if anything sticks out as abnormally large.