[mythtv] protocol version 22 / 23

[John P Poet]

I updated to the current SVN yesterday, and very quickly had problems
with the backend not responding to the frontend.  It would work for a
while, but after an hour or so, there would be problems.

Looking at the log, I see a lot of:

   MainServer::HandleVersion - Client speaks protocol version 22 but
we speak 23!

I get that error even when all clients (frontend, mythcommflag,
mythweb) are shut down, and the ONLY thing running is the master
backend.

How do I diagnose this problem?  How do I figure out what "client" is
causing the problem?

Thanks,

John