I've been getting a lot of these lately from several linux clients. It just randomly appears, then goes away:

red Wed Mar 3 10:04:11 EST 2010 - Filesystems NOT ok
&red 22% /mnt/foo (282464108% used) has reached the PANIC level (98%)
Filesystem 1024-blocks Used Available Capacity Mounted on
/dev/sdc1 307663800 8986508 283048860 4% /
/dev/sdb1 288435168 120484520 153298968 45% /mnt/300gb
/dev/sd
3 ] 377855068 75887248 282464108 22% /mnt/foo

Any ideas where I should start poking around? I am using the latest Xymon beta client...

Matthew Daubenspeck http://oddprocess.org

Gentoo Linux i686 Intel(R) Xeon(R) CPU L5420 @ 2.50GHz 13:15:31 up 125 days, 2:43, 5 users, load average: 0.03, 0.08, 0.03