Serious Bug in Linux Kernel 2.4.15

[Warren Togami]

Linux Kernel 2.4.15 has a filesystem corruption bug when unmounting any
filesystem.  Please avoid 2.4.15-pre9 and 2.4.15.

Read about it here:
http://slashdot.org/article.pl?sid=01/11/24/1711245&mode=thread

The fix is in 2.4.16-pre1 and 2.4.15-aa1
http://www.linuxtoday.com/news_story.php3?ltsn=2001-11-25-001-20-NW-KN
http://www.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4/2.4.15aa1/00_iput-unmount-corruption-fix-1

If you are currently running 2.4.15, be sure to "shutdown -F" to force a
fsck the next time your system boots.  That should fix any possible
filesystem corruption caused by this bug.