I have several ports on one blade of a 4500 switch that were working this morning and just started dropping the connection. I thought it may have something to do with POE. I had one person say that their phone quit working. I unplugged the network from the phone and plugged it into her pc and it worked. Plugged the phone into another port on another blade on the switch and it worked. Some of the ports that have dropped will not come back up. Doing a shut/no-shut on the port doesn't work either. There are 5 or 6 of these ports with similar symptoms. None of the ports on the blade are showing an err-disable they are either connected or not connected. Power consumption is 1249 used out of 4846. All enviro stats look ok. I have 5 other blades in this chassis, none showing any symptoms. I can move the dead lines to these ports and they work. I haven't been able to re-seat the card yet. Is there anything else short of that that I may be able to try???