I'm using a WRT54G v5 with DD-WRT v23 SP2 Micro and Comcast is my ISP. Yesterday I began to lose my Internet connection, where the only solution was to manually release and renew the DHCP lease from the router. Wondering if there weren't other problems, I also pinged some Internet sites and noticed anywhere from 4-7% packet loss. I wanted to see if the issue was with my router, so I connected my cable modem directly to my PowerMac running OS X 10.4.7, and had 0% packet loss and no DHCP problems. I tried a number of different things, including replacing the cat5 cable connecting my cable modem and router (it looked a little shabby), but that didn't work. What did resolve the issue was changing the WAN MAC address from DD-WRT Micro's default (00:40:10:10:00:02) to a MAC address I copied from an old D-Link router. DD-WRT and the router had been performing fine for probably a month now. Any ideas why I all of a sudden had problems, and why changing my MAC address fixed it?