libart2.0-cil into Mono hangs rootstock ubuntu-netbook

[Dr. The Fugitive]

System used , 10.10 meerkat candidate, attempting to rootstock a lucid netbook
output of uname -a:
"user@meerkat:~/Desktop$ uname -a
Linux meerkat 2.6.35-22-generic #33-Ubuntu SMP Sun Sep 19 20:32:27 UTC 2010 x86_64 GNU/Linux"

Apparently at some point while installing assemblies into Mono, bash and rootstock hang here, also is the output after ctrl-c:

" * Installing 6 assemblies from libart2.0-cil into Mono
^F^CI: Cleaning up...
I: Killed chroot...
.....
I: Umounting temporary Image
umount2: Device or resource busy
umount: /tmp/tmp.iMeBvo3Qrx/tmpmount/proc: device is busy.
        (In some cases useful info about processes that use
         the device is found by lsof(8) or fuser(1))
umount2: Device or resource busy"

This unmounted device is still using 100% of one of my duocore cpu's after rootstock has exited.

Any insight?

Thanks

-DrTheFugitive