Another Can't Connect but...

I have been running Multiplicity for More than 10 Months without a single problem.  Now all of the sudden it won't connect at all, i've disabled firewalls, upgraded to the latest version, tried several different non standard ports, and even switched out my network gear.  I'm lost, it literally stopped working riight in front of my eyes as i was working and now i can't get it to connect no matter what i do.  I've even tried switching the primary to seconday and back again.  I'm running windows 2008 as primary and xp as secondary and like i said it worked for atleast 10 months without issue.