I upgraded to 8.0.4 several weeks ago from 8.0.2. Since that time, the server has crashed with this message printed repeating over and over again. It used to only crash every 2 weeks or so, then 1 week, everyday, and now several times a day. When I manually reboot, everything seems to check out fine until I can no longer access my data, in which case I check the server and it displays that message. Hard to know where to look for a problem! Is it a hardware failure? Any help would be appreciated!