I just flashed Tomato on my WRT54G (v. 1) and I like it a lot. I like its clean interface and ajax-ish feel. But for some reason, DDNS doesn't work at all. I've tried a few different services (including a custom URL), but nothing works. In version 1.17, all I got was "Updating" next to last result. With the new 1.18 firmware, I don't even get that. And when I telnet in and run "ddns-update", nothing happens either (it runs for a few seconds, but it doesn't do anything). I have it set up in wireless ethernet bridge mode, which may be why it doesn't work, but the router can access the internet (pings and traceroutes work fine) so there must be a way for it to work. This is basically a dealbreaker for me, and i don't really want to go back to DD-WRT, so I hope that I can get this working.