Has anyone ever come accross this problem? we have had it happening intermittantly..

Oct 13 13:50:30 server in.qpopper[2737]: [SYS/TEMP] Unable to open temporary mail
drop '/var/spool/mail/.userx.pop': No space left on device (28)
Oct 13 13:50:30 server in.qpopper[2737]: userx at x.x.x.x(x.x.x.x): -
ERR [SYS/TEMP] Failed to create /var/spool/mail/.userx.pop with uid 441, gid 12
. Change permissions.

weird thing is though, "df" says the following [ deleted the other stats for the fs] :

[root mail]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/hda3 194M 124M 70M 64% /var

This seems to have only started ever since put some updates on the cobalt (last 5 i think it was)..... We had the prob, it sorted itself out and was fine for 2 days and now its happening again...

any one got any ideas?