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Description of problem:
If I shutdown my system, the system hangs while "Unmounting local file
systems".  I narrowed down this problem, by stopping Squid (service squid
stop), and trying to umount /webcache (the mount point for my reiserfs file
sytem that Squid is using).  The umount command simply hangs, and cannot be
killed.  I believe this problem was introduced with an update to the mount
package, because this was not happening with my initial implementation of
reiserfs on RedHat 7.1.  The umount -V command reports the following
version information:

umount: mount-2.11b

How reproducible:
Always

Steps to Reproduce:
1.mount any reiserfs file system
2.umount any reiserfs file system
3.
	

Actual Results:  umount hangs, and cannot be killed.

Expected Results:  umount should finish, and the file system should no
longer be mounted.

Additional info:

I believe this issue was introduced with a patch to mount.  The umount -V
command reports the following version information:

umount: mount-2.11b