Last night, I found out that unmounting the MFS on /tmp before
shutting down was sufficient to prevent the hang on shutdown.
-- 
Mike Long <mike.long@analog.com>       PGP 2.6.2 public key signature:
VLSI Design Engineer                  CCBF225E7D3F7ECB2C8F7ABB15D9BE7B
Analog Devices, CPD Division   "Get a life" -- Prosecutor Marcia Clark
Norwood, MA 02062 USA                assert(*this!=opinionof(Analog));