System was flaky the last couple of days, time to replace the UPS batteries. Took a power hit when a homeless guy broke into the local power substation and got zapped (but not killed) trying to steal copper cabling. Front end web server kept running, secondary application server was having trouble talking with the database server. A domain controller dropped out and I had the other one turned off to be used as a standby so everything was getting weird. Have rebooted everything now and looks like things are finally happy again. :)