There are two (un)official IRC channels at irc.freenode.net where you can meet KAMAILIO (OpenSER) users, chat with, post questions or, even better, answer them.
Server: irc.freenode.net
Channel: #openser
Channel: #kamailio
FLASHNEWS
2010-02-02 - Kamailio v1.5.4 is out - a
minor release of the branch 1.5, including fixes since v1.5.3 -
configuration file and database compatibility is preserved...
2010-02-02 - Kamailio v1.4.5 is out - a
minor release of the branch 1.4, including fixes since v1.4.4 - configuration file
and database compatibility is preserved...
