Xbox 360 Disconnection

my xbox360 will lose connection constantly. doesnt matter if im in a game or at the dashboard. 10 minutes maximum till i get disconnected.

ive forwarded all the recommended ports
TCP/UDP 53
TCP 80
TCP/UDP 3074
UDP 88


have UPnP enabled, have an Open NAT and have tried 3 different ethernet cables, Firewall on and off... no matter if my laptop is connected or unplugged i get disconnected within 10 minutes.

my Router/Gateway is model #GT724-WG

ive tried manual network settings on xbox and automatic setting neither helps the disconnections...

any advise?


bah i think i posted this in the wrong section, sorry.. please move to appropriate place if need be

 

forgot to say its an Actiontec router

no one at Xbox.com can help.

neither can my ISP even though they told me on the phone "its great for gaming, like xbox360", when i was ISP shopping... but when i call support they say they cant help me with xbox360 cause they dont support it

 

Have you tried putting your xbox360 on a DMZ?