not sure which 1 i have but it,s black and got it from sky when my 2kids are playing on the xbox in there rooms i,e 1 in each room then i play world of warcraft on the pc there signal diapers or is very low is there anyway of fixing this or tweaking the setting 2 make the router run faster
will be watching this topic with great interest, because i have a similar problem..
i believe your game is using up all your isp's upload bandwidth which stops the kids from being able to send an acknowledge signal to the isp so they aren't sent any more data.
my problem is my ftp server software and a program called folding, when folding sends back it's completed work units i loose internet connection for everything else, things like web browser and skype, until the upload as finished.
now i haven't been able to find a way to fix the problem in my router which is a sagem router also with sky, but your's is different so there might be a way for you.
anyway with folding i haven't been able to solve the problem,
but with my ftp server i can by going into the server program, and limiting it's speed to 0.85 Mibs from my normal upload speed of around 1Mibs, now this isn't a great fix because it also limits my download speed from 14 Mibs to the 0.85 Mibs.
i believe your fix may have something to do with QoS(Quality of service) options in your router if they are there.