Our network has been working fine up until now. We have an xserve, a switch off of an xserve that shoots out the internet to all of our ethernet ports in the school. After a couple weeks (school got out and went on vaca) I came back and logged on to a couple of the computers in the computer lab and got this message on each computer. IP Configuration: XXX.XXX.X.XX in use by XX:XX:XX:XX:XX:XX, DHCP Server XXX.XXX.X.X. Of course the IP's were different on each computer I tried. THis message has never popped up before. Our printers are also being very strange, and I am guessing it has to do with this same thing, since our printers are wired via ethernet also. Can anyone give me some ideas on this? Thanks so much. I greatly need the help and very much appreciate anything.