This has annoyed me for the past two weeks! My phone, when connected to WiFi (my home network), I cannot run most apps that require an internet connection. I cannot visit Market, Engadget app, Newsrob, etc to name a few. Gmail works fine. When I turn off WiFi, and resort to 3G, those apps will now work fine! Other WiFi devices (iPod, PS3, Wii, Laptop) are working fine on my network, so I am pretty confident my router is configured properly. Anyone have any ideas? Maybe 2.1 will fix this!!