I have a wrt54gc and two Dell laptops configured for DHCP in a very straightforward setup. WAN is wired, LAN is wireless. I have WPA security enabled. The laptops are configured to use DHCP, and for the most part it works. However, after reebooting the computer or connecting it to another network and back (so it needs to get a new IP address from the DHCP) server, the DHCP server does not respond, even if I see that I am connected to my wireless network. ipconfig -renew hangs until I get a "failed to connect to DHCP server". After reebooting the router (by pulling the plug) everything works OK. The laptops have no problems on other wireless networks. Rebooting the router is what I've been doing for some months now, and I've tried to change various settings on the router, but this problem persists. It is extremely annoying. I have a 1.02.5 firmware and not very enthusiastic about upgrading it since it seems the procedure is prone to killing the router.