Quote Originally Posted by another view
Sorry for the suspense... I figured it out. It was in the hidden files, there was a lot of temporary stuff built up that I didn't notice before. I think the main one was one (or a few) Photoshop files but not sure what they were and why they were so big. I didn't really take the time to figure it out - I found them and zapped them.

Thanks!
Download something called tracks Eraser. Besides the obvioius, it does a remarkable job on tempory files. you can always run the windows disk clean up wizard, if you have a few hours to spare