On further review this particular server skipped from 9.2.2 to 9.2.4. This is my most busy and downtime sensitive server and I was waiting on a maintenance window to patch to 9.2.3 when 9.2.4 dropped and bumped up the urgency. However, I have 3 other less busy production servers that were all running 9.2.3 for a while, didnt exhibit the problem, and still dont on 9.2.4.
psql> analyze seems to work ok in the meantime, I'll report back if I notice any problems with that.
Thanks very much for the response and investigation, it is much appreciated!