/var getting full

[Dale Morris <dlm@well.com>]

I just did a new cd install of 2.2. I have a 15g hard drive, 5g of which is
a windoze partition, 5g for Linux and another 5 free space for BSD when I
finally get around to installing it. I just started watching the disk
contents, because I've set up disk partitions with 300megs for /var and /200
for /tmp. I am noticing that /var is now 70% full. Yesterday it was 46% and
I went in and cleaned out all my big mail files, yet that made little
difference. Is there something wrong here or is this normal /var behavior?

Here's what the df command yields:

Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/hda3                94667     53227     36552  59% /
/dev/hda5                94635       638     89110   1% /tmp
/dev/hda6               283431    187954     80838  70% /var
/dev/hda7              1922188    764500   1060040  42% /usr
/dev/hda8              2402992    552172   1728756  24% /home

thanks