[phillychuck]

After reaing this thread and the Apple forum on the Wifi issues, I think we're looking at two problems. One is a weird DNS problem that can be solved by manually inputting DNS server IPs, and is characterized by the phone showing network signal but not being able to access the internet.

The second problem appears to be the one I have, and I think tinman does, too, where the iphone loses signal after connecting. I don't think that problem has anything to do with the DNS server, I think its purely a local network issue, which appears to be solvable by replacing the router (something I don't want to do). There's got to be another way...

There might even be a third wifi problem that's solved by resetting the phone and router, and telling the phone to forget your local network.

In other words, there are a lot of bugs with wifi that some early adopters are going to have to confront.