I have a 4gb 1st gen iphone, when i turn on the wi-fi the little wheel just keeps spinning and no networks show up. There was 1 time that it detected my wireless network, i proceeded to type in the password but when i pressed "join" the network disappeared. But my dad has an iPhone and all the networks within range show up. It is jailbroken. I'm not sure if this is related but the time on the lock screen is also off sometimes. When you press the sleep/wake button you can see the time changing to catch up to the correct time.