comcast recently gave me a new netgear modem/router combo unit and when i play halo2 on my 360 people i dont usually play with enter my party and cause me to lagg out. Then my connection is down on my computer and xbox for about 2 minutes. Im thinking it may be this new modem router combo but not shure. Then when i lagg out, on my computer it says a network cable has been unplugged in the taskbar. It makes me mad and comcast has been really dumb and keeps telling me to powercycle my modem but now they say it has something to do with my cable signal not being high enough and some technicians are gonna fix it. I am fed up and need some clues on how to fix it.