Thanks, I think we can establish now that this is Evo-specific. I know of someone on an Epic too that says doesn't have the issue.
Anyone know the IP differences between Sprint 3G and Wi-Fi, and 4G? Why is the Nook Color being handled differently to, say, a laptop. And, how does the Evo handle requests differently to the Clear device, for example? Is it hardware related to the 4G radio? Apps Hotspot or Wireless Tether both fail, so not software specific. Also, NC over Froyo or 1.1 is irrelevant, so it's not a software issue at the browser level?