I have about 16 Linux machines and 2 windows machines on my network. Today i moved my PDC (Server 2003) to another location in the room wich means on the other side of a couple of switches. I had to move some other stuff do to space. When i moved everything around all my connections for my Linux machines have some security error. Basically my network cards will not pull DHCP address any more. I never moved the Linux machines but i did move the server and my Windows machines. All my windows boxes are working fine but none of my Linux boxes are (Core 13) Anyone have any possible solutions?