I found a USB the other day and after deleting all of the 8 gigabytes of files it said that there was 4 gigabytes left.
this may sound very blunt but were there any hidden files, or were there a bunch of "invisible" programs on it.
I created a Task Manager for Windows XP but when I put it on the Windows 7 it says 'Bound error'.
I promise I did not check for platform.
Did you write it in visual basic?