when i open "My Computer" for some reason my 20GB of space is nearly full with 500MB Free Space left, but if i unhid all system files etc and then Hightlighted the files/folders on C: drive, Right Click then select Properties it only shows 14.1Gb of space used.
i only installed 1GB worth of software and Disabled Hibenate and System Restore, where has my 5GB gone?