I frequently have issues staying connected to XBOX Live, and recently my XBOX will not connect at all. The error is my internet not connecting to XBOX Live and it's telling me that my MTU is insufficient. My router configuration page says that I have 1500 MTU and the XBOX says I need 1364. I have opened the appropriate ports on my configuration page, and when I plug my XBOX directly into the modem it will successfully connect. I have 3 laptops and a notebook that use my wireless signaI. I have turned all these computers off and my XBOX still will not connect. I have contacted XBOX Live, my internet service provider, and my router manufacturer. None of them can correct my problem. Anybody got any help??