I am seeing intermittent connection refused errors from the MMS agent when running locally against 2.1.2.

This was in the mongo logs at the time of the failure:

Wed Jun 27 20:57:32 [conn271] end connection 192.168.0.59:53259 (44 connections now open)
Wed Jun 27 20:58:10 [journal] info journal _rotate called inside dbMutex - ok but should be somewhat rare
Wed Jun 27 20:58:28 [conn34] info DFM::findAll(): extent 0:5000 was empty, skipping ahead. ns:alerts.tmp.alertJobs
Wed Jun 27 20:58:30 [initandlisten] connection accepted from 192.168.0.59:53639 #272 (45 connections now open)
Wed Jun 27 20:58:30 [initandlisten] connection accepted from 192.168.0.59:53640 #273 (46 connections now open)
Wed Jun 27 20:58:33 [conn272] end connection 192.168.0.59:53639 (45 connections now open)
Wed Jun 27 20:58:33 [initandlisten] connection accepted from 192.168.0.59:53645 #274 (46 connections now open)
Wed Jun 27 20:58:37 [journal] info journal _rotate called inside dbMutex - ok but should be somewhat rare

An app exception example (same error when ran with pymongo 2.2):

[exec] 2012-06-27 20:58:28,863 WARNING Problem collecting non-blocking data from (check if it is up and DNS): some.local:27017 - Traceback (most recent call last):
[exec] File "/Users/who/work/dev/mms/server/build/agent-test/nonBlockingStats.py", line 51, in run
[exec] self.monitorConn = self.mmsAgent.getDbConnection( self.hostDef )
[exec] File "/Users/who/work/dev/mms/server/build/agent-test/mmsAgent.py", line 85, in getDbConnection
[exec] return pymongo.Connection( hostDef['mongoUri'] , slave_okay=True )
[exec] File "/Library/Python/2.7/site-packages/pymongo-2.1.1-py2.7-macosx-10.7-intel.egg/pymongo/connection.py", line 381, in _init_
[exec] self.__find_node()
[exec] File "/Library/Python/2.7/site-packages/pymongo-2.1.1-py2.7-macosx-10.7-intel.egg/pymongo/connection.py", line 659, in __find_node
[exec] raise AutoReconnect(', '.join(errors))
[exec] AutoReconnect: could not connect to Rnz4c.local:27017: [Errno 61] Connection refused