Problem 1: pbs_server crash:

For a while I was seeing pbs_server crash each time moab was
restarted.  I was playing with moab REMAPCLASS and REMAPCLASSLIST
configurations.  With REMAPCLASS disabled pbs_server did not crash.

guess: I had something queued which was being remapped upon moab
restart which would crash pbs_server (the jobs do not get remapped).
After restarting pbs_server things where okay and new jobs where
remapped correctly.

Additional note: There was a large array job with both running (~1500)
and queued (~1000) tasks.  There may have been some confusion when the
queued tasks where attempted to be remapped.

Some more notes: I've just seen another instance of this problem.  If
I submit several jobs quickly which need to be remapped pbs_server
will die.  If there is only a single job needing to be remapped when
moab restarts pbs_server does not die and the remapping happens.

It looks like pbs_server dies if multiple remaps happen either two
quickly or simultaneously.

Queuing a single array job does not crash pbs_server.  I see the
individual tasks get remapped over time.