My system had the following error sent to syslog: kernel: Assertion failure in ext3_free_blocks() at balloc.c line 358: "bh->b_committed_data != NULL" Immediately before that with the same timestamp was a sendmail entry. The system locked up shortly after that. I never saw an oops. I was tailing /var/log/messages in a terminal. That syslog entry was not saved to disk. I have not been able to repeat that error. Slackware 8.0 2.2.20 ext3-0.0.7 96MB RAM 333 Celeron dentonj -- dd if=/dev/random bs=1024 count=10 | \ mail -s "Green Cow" spook@nsa.gov