First, Day9 FTW!!!!! And thank you for mentioning him, havent watched him in a while and I see he finally went HD? Glad he held out though, not his style to ride on the band wagon. Some questions though
1.Whats your ISP? And whats your MTU?
2. Have you tried saving your config and reseting to factory? I have hardware revision A2 and firmware 1.22NA, on a cable broadband ISP, wired connection to a XP SP3 laptop, with the router set to factory and not having any problems loading his streams, even the most recent (highest traffic?) ones. I tried messing around with my settings, TRYING to get it to do that, but to no avail.
3.What kind of throughput are you getting? Try
here. Also what kind of speed to you pay for? Whats your tier.
4. Start > Run > CMD > Ping -n 50 blip.tv Try that when everything is fine, and when your having a problem. Any packet loss? Whats the latency? Also try with google.com, or the IP of your choice. Reply with the result.