I'm --> <-- this close to switching back to a Linksys router. No, in fact, I will switch back once I've purchased some other necessary hardware for my business. I bought the DGL-4500 in March '09, and it worked fine for a few months. Suddenly, one day everything lost its internet connection.
After resetting the DGL-4500, most everything is up (only one XP box can't detect the wireless network for some reason), BUT -- every time the cable modem has to be rebooted, I have to go through hell to get some machines and a range extender to detect the wireless network again.
Then, I go and upgrade the firmware to 1.21NA and made life even more difficult.
I had at least 6 years of stable service with the Linksys, and I go and switch to this P.O.S. D-Link "gaming" router. Worst decision I ever made.