# df -h
Filesystem Size Used Avail Capacity Mounted
on /dev/wd0a 787M 778M -30.6M 104% /
WTF is going on here? -30.6M sounds kinda weird.
Like many filesystems, FFS operates rather slowly when it's nearly
full, so space is reserved for root, who would usually know about the
possible problems caused by over-filling an fs. (fwiw, 30% is
recommended on NTFS and you don't get any assistance by having
'reserved space' as presumably it would be bad for marketing!).
Another thing that doesn't seem to have been picked-up on in replies
yet: it looks like you have stuffed everything in / - now you have a
better idea of how much space things take up, it might be worth
splitting up your filesystem a bit, there's useful information about
this at <http://www.openbsd.org/faq/faq4.html#SpaceNeeded>.
