2.4.2 seems to break loopback and/or mount

Please CC me on replies. I just joined the list and don't want
to miss any replies.

I have been running 2.4.1-pre10 for quite some time with no
problems. I just upgraded to 2.4.2 and everything seem to work
fine until I did...  (as root or course)

mount -t iso9660 -o loop,ro mycdimage.iso /mnt/cdrom

at which point the mount process hung in an uninterruptable sleep.
after that I can no longer successfully issue any other mount
commands, including non-loopback mounts. I can mount/unmount
regular partitions before mounting anything via loopback.

Any ideas as to what is wrong?
The only thing I can think of is that my modutils is v2.3.19
but I doubt that is doing it as the loop module and other modules
are loaded fine.

If anybody has an idea as to what I broke please let me know.
I will upgrade modutils tomorrow and see if the problem goes
away while I wait for a possibly more accurate response.

Thank you,

Jeff Wiegley