I'm trying to run a pretty simple 3 router OSPF configuration. The main edge router is a Cisco 3640 and the other two are RB532's running 2.9.27 and 2.9.28. The RB532 running 2.9.28 seems to not be functioning properly. It is sending out LSA's all the time, constantly changing link states (like around 150 in about 5 minutes). I even got my CCIE Cisco buddy involved in the troubleshooting and he suggested that the 2.8.28 RB was acting erratic. I guess my question, is there any known problems with OSPF on 2.9.28? Should I try .29? Or drop down to a lower one that is stable?