Just got back yesterday from Portland after the
XMPP interop event ... it was a really cool event.
We
had 6 completely different servers interoperating without too much of a
problem - including when some funky multi-byte testcases were tried in
S2S which
stpeter
dreamed up

There were some hiccups when TLS was enabled with SASL
External / dialback ... but nothing too serious which could not be
fixed.
The achievments of
the event are pretty incredible - there is no other protocol on instant
messaging which can possibly boast of achieving something like this -
most dont even have an implementation of size more than 1 !
While the testing was going on , in parallel we had some very productive discussions , including to clarify on aspects of the
RFC's and
JEP's : what was debated upon would get translated into changes or discussions at
standards-jig pretty soon !
Portland looked "pretty" - from what little I saw , and the event venue itself allowed for a real nice view of the downtown.
I could not attend OSCON unfortunately ...