The GDBM service stops posting versions in the post queue.
This error is reported in the GDBM log.
3/5/2014 12:00:00 PM : Error processing Priority Table entry for Node ID 900.
3/5/2014 12:00:00 PM : Error processing Priority Table entry for Node ID 905.
The problem goes away when the GDBM service is restarted.
This issue may be related to the following bug:
MM50138: ArcFM Geodatabase Manager -- GDBM service continues to run but stops posting sessions
The workaround is to proactively restart the GDBM service. GDBM uses Windows Services as the architecture for the reconcile and posting services. Commands similar to the following can be placed in a batch file and scheduled through Windows Task Scheduler.
net stop GDBMService1
net start GDBMService1