I had an issue several months back with VNC writing several lines to the xsession-errors log. (Here's the link). I got rid of the log and go it working, but every couple weeks, I'd have the EXACT SAME ISSUE. Kind of annoying, but I delete the log, restart machine and I'm running again. I finally figured out how to send that log (which contained NOTHING else) to /dev/null. Worked great. Today, I had the SAME PROBLEM AGAIN! Only instead of the xsession-errors file, the logfile in question was in my .vnc directory.
Again, it's logging the same line "AM Authentication deferred - ignoring client message" several thousand times per second until the log fills up. I can't find anything online regarding this error. Any ideas what the root cause of this might be?
Thanks for any ideas!