You might have symbolic links, try using du -hxL
Or, you have an "open file descriptor(s)" that you have to deal with, see:
http://www.cyberciti.biz/tips/freebs...nt-output.html
http://www.walkernews.net/2007/07/13...ed-disk-space/
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The best way to learn UNIX is to play with it, and the harder you play, the more you learn.
If you play hard enough, you'll break something for sure, and having to fix a badly broken system is arguably the fastest way of all to learn. -Michael Lucas, AbsoluteBSD
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