My hard drive is weird; if I'm running out of space it'll get extra space out of no where, or something. Like just now I was downloading FFVII with Bit Torrent and it was gonna take a long time, so I got the version that minimizes to the system tray(BT++) and at that point I only had 300mb left, so when I started that one up it acolated FFVII to a different place (I didn't know it'd do that) and it ran out of space and there was an error but as I was trying to delete the new files (it said they were still being used blah blah) I checked the free space on the hd, before I tried to delete them there was 47mb left and after I gave up and went to reboot there was 1.3gb left. So after I rebooted I deleted them thinking there'd be no change in the free space, cause something like that happened before (when I deleted a file and no space was freed up and extra space was given that time too) but then there was 2.4gb. @_@
Is there anyway to find out what files are being lost/missreported?

Also, I'm on XP and I'm trying to give my .avi files custom icons, I swiched thier program from WMP to the Divx player and the icon they have is just the default 'no program' icon.