> I've got some files that I can't remove. They are avi or mp4
> loaded from DVD, occassionally mp3 too
>

i have experienced this and put it down to windows os opening the file
to learn about it so it can display attributes like dimension, bit
rate, etc and finally a thumbnail screenshot.  I figured it could only
do this by opening the file and thus locking it in the process. I
guessed the process was untidy and never closed the files properly, or
just wanted to learn more about them for indexing etc.

I now just have limited number of attribute columns viewed.

I had some success deleting them by sneaking up on them after a reboot
via the command shell.
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