Wi-fi hardly works

[Cappuchica]

Sooo, I'm hoping this isn't a no-brainer but I'm having trouble with my wi-fi connection. I can connect to whatever network I choose (right now I'm using a fairly strong, secure home connection) but it seems almost useless. Pandora, the Market, and last.fm all do not load under wi-fi. They only seem to work when I'm using a 3G connection which I have been doing. I end up keeping wi-fi turned off because nothing seems to load on it (even web pages are slow?) I've tried my home connection and public university connections and nothing seems to work. I was excited to use it but it hasn't work in 2.1 or 2.2. Any suggestions?

 

[twitch2000]

Have you tried a factory reset? Sometimes that can work.