Last weekend I created a set of backports of jabberd and its unfulfilled dependencies for etch, for use in my jabber server which has been suffering s2s problems for way too long.

The packages are a bit quick and dirty, but good enough for my personal use (a known issue is the lack of shlibs bump in gsasl) and are available from this non-apt-get enabled repository. If I can help the XMPP team in any way to help these packages get into unstable or experimental, I'm totally willing to help.