Recently upgraded a customer's IPO to R11.1 and installed a new VM Pro server. Everything appeared to upgrade flawlessly. Now a day and a half after the upgrade, customer calls and tells me that one of their phones (all 9508 and 9504's) isn't working. I get on-site, and the phone (a 9504) is in a constant state of rebooting. It powers up, says "Please Wait" and then immediately reboots again. This phone is connected to a Digital Station 30B expansion module. Digging deeper into this issue, find that the port is bad, so it appears. I rebooted the entire system thinking maybe something just hung up as a result of the upgrade, but no change. Further more, in moving this extension to an unused port, I find another port that is exhibiting the same behavior, and this port has never had a phone connected to it. I did find a port that works, but it is odd that in the 9 years that this system has been in service, I've never had an issue with ports until this upgrade took place.

Anyone experience anything like this before?