Anyone else having any of these go down to all red lights and are less than 1 year old on R11? We had 3 from different area fail this past 2 weeks that were 6 months or less old. They are all under warranty so we aren't taking the time to DTE it and figuring if it can be recovered. The failures were not due to power surge or outage & were running SIP lines and IP phones, just a random middle of the day occurrence.