Linksys Wireless-G WRTP54G Router "duty keeps disconnecting xbox live" Questions

...xbox live, everything is fine. my NAT is open. everything is just fine. when im playing call of duty 4 or some other game, i get diconnected. i dont really know why? i heard that u had to update or ...

...xbox live i get diconnected randomly. in call of duty 4 i play one game and on my second i get disconnected. my NAT is open and i have perfect connection. everything seems to be fine. i went to ...