I just got a new router yesterday, i got it up and running in about 15 minutes. But when I try to connect my Iphone 4 it gives me the "unable to join the network" message. I only have the problem when I turn on the security. When I disable security my Iphone connects fine. Please help, I have tried every single security option, no help. I tried upgrading the router firmware, no help. The router is a Linksys WRT54GL. The Iphone is up to date.