Same here. I can connect but I keep losing the connection! Kinda sux, but I only use wifi at home, and why the f am I using my iphone at home when I have a laptop?!?!?
Anyway, I have the same issue too. I also restored (not for this reason though). Issue is still there. Weak signal, loosing connection. Laptop is still fine. So is Wii, 360 too! So I guess the problem is my phone now.
No big deal to me, but I can see how some would be a little ticked off. I guess, if it really bothers you, it's a bug that you can submit to Apple. They should probably look into it.