After looking at Oracles MTT results there seem to be a (some??) regressions between r26240 and 26249 detected by the ibm and intel tests suites.  An example of this is the failures in the comm_join, final and loop_spawn tests of the ibm test suite as seen in http://www.open-mpi.org/mtt/index.php?do_redir=2055.

Note, I've seen similar errors detected by IU runs too.

I'll look further into this but I thought I would post this just in case someone else has seen this.
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Terry D. Dontje | Principal Software Engineer
Developer Tools Engineering | +1.781.442.2631
Oracle - Performance Technologies
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Email terry.dontje@oracle.com