Wanted to know if anyone has found a solution to this problem since linksys has left me high and dry here. I have been in contact with MS and Linksys for several hours each, I have gone through all the settings of upnp, portforwarding, security and all that jazz. I was on the phone with linksysy about a month ago with this problem, I asked if the router was compatible with XBOX live, they said it was, after a good 5 hours on the phone and lots of tweaking with no effect, they then told me that it wasn't compatible, but that the next firmware release would resolve the issue. That was version .15, a week ago they released version .17. This patch does nothing for xbox 360 users. Again I talk to Linksys, and i ask if this patch resolves the issue, they tell me yes, so I download the firmware, install, and then get them to help me tweak it again. After an hour they tell me to talk to MS because there must be something on their end. This is all very frustrating, because I can connect using my older router with the same set up, just that the signal isn't as strong as the x4. BAAAH. any help?