Recent unexplained quota problems

[Ryan Golhar]

I'm running a RHEL v3 server, completely up to date...

I tried to edit a user's quota (as root) using the command
'/usr/sbin/edquota someuser' and I got the error:

edquota: Can't open quotafile /home/aquota.user: Read-only file system
No filesystems with quota detected.

Doing a listing of aquota.user reports:

[root at server log]# ll /home/aquota.user
-rw-------    1 root     root        15360 Sep  9 04:22 /home/aquota.user

/etc/fstab has:
LABEL=/home            /home          ext3    defaults,usrquota 1 2

A listing of /home shows:
drwxr-xr-x  133 root     root         4096 Sep  7 12:49 home

If I try to 'touch test' in /home I get:
[root at server home]# touch test
touch: creating `test': Read-only file system

I rebooted the server and everything seems to be okay.  I'm a little 
concerned about this though because I can't explain it.

Any ideas?