This is most definitely an issue that we can best address via a call to our Technical Assistance Center. It is doubtful that the event filters were in any way responsible for this behavior. While you have the serial console connected, you might want to take note if you see any unusual errors or warnings during operating system initialization. In particular, please note whether the platform identification reports "UNKNOWN", or if any errors are returned by the IDE drivers ("hda", "hdb", "hdc", etc.). I would suggest opening a TAC case and providing a session capture showing one full boot cycle.
