My Dell laptop used to be able to connect to wireless just fine, but lately it connects to whatever signal I'm using and then just says "local only" and won't let me actually use the internet. I don't know what to do, any advice? It does this for every wireless connection from the one at my house to public wi-fi networks.

reinstall wireless drivers>restart. Gotta love Microsoft.

I sure do. Hardly any problems at all.