BF Vietnam

[Hamer]

We have several p/c's running thru a network using a router. In the past we have played BF1942, and other online games with no hitch.. Just recently when either we log on to play the same game we bump each other off. If I'm on first then my son logs on he kicks me off then he can play.. It all depends upon whos on first. We have both did they punkbuster updates, so I do not know if thats an issue.. Any ideas ?? Thanks