Could the port be tagged incorrectly where the camera is plugged in? I would try unplugging the wireless adapter you just connected, and see if you can plug the camera into that port and see if it comes online.
Well, that camera is mounted far away from the camera server...
So by giving the camera server a new MAC Address via the wireless adapter, it could now get to the TREE and then to the camera.
But I am worried this could come back again...and I am going to go put a new ethernet card in it today. I just did the wireless last night for a quick and easy test.