Have two XP computers with a Linksys BEFSX41 router. Each PC has it's own IP, but when posting on a forum where I and wife hangout, I have noticed that our IP's show up as the same. Is this normal? Also, should this slow our speeds way down when we both are online? We have cable modem but most times when online together, it's feels like we are using dial-up. Thanks for any help!