i have a cable modem going into a dlink router and then out to a switch that goes into the network patch panel. Wireless works fine (I'm on it now), but anything hard wired is not working at all. I can unplug the switch and plug it back up, then the hard wired stuff works for about 30 seconds and then goes back off. I've already reset everything numerous times, and the only thing that makes the hard wired network work is unplugging the switch, but it only works for about 30 seconds. I've put in another switch and with the same results. Any ideas?''