From 2012-06-01 all fedorahosted.org Trac instances miss ticket.create and ticket.update RPC methods. These commands are crucial for our automatic Bugzilla/Trac synchronization tools. Commands are also not listed in the RPC interface command list any more:
ticket.create
ticket.update
https://fedorahosted.org/freeipa/login/xmlrpc
I did a bit of initial investigation this morning. I couldn't find any clear indication of what caused these XMLRPC APIs to disappear, but I do notice that the Trac Agilo plugin was added. The timing of this seems to coincide quite closely, so I'd suspect that it's as good a place as any to start looking.
It was the agilo plugin. I'm not entirely sure why yet.
I've removed it for now... so things should be back to working.