Could not connect to socket /var/run/imap/lmtp

[Michael Loftis]

Looks/sounds like a deadlock problem on a berkeleydb...  db2+ have a 
utility called db_deadlock -- I'm not sure but you might just need to 
update/upgrade your version of berkeley though.

db_deadlock and use with cyrus I havent' tried, but that may solve your 
problem.
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