QUOTE(SupaDawg @ Sep 20 2008, 04:54 AM)

NOCLUE, I actually just started getting that MTU error tonight myself. I`ll see if i can figure it out.
Dude if you figure it out I'd be ever so greatful if you posted it here.
There are only 2 highspeed ISPs where I live, I'm on the verge of switching to the other (if I even can : / ).
My xboxlive worked fine for almost 2 years, but now I haven't had live for 3months T-T
Whats odd is if I plug the xbox directly into the modem I get the exact same MTU error, it's unlikely it's the router becuase I've tried two different types.
Hope you resolve your problem as well.