Internet delay on Sony Vaio laptop?

I play World of Warcraft on a Sony Vaio VGN-N130G laptop with XP SP2, 1.6ghz dual core processor, 2GB Ram, and intel 945 express chipset video. While all this is well over what is recommended for WoW i seem to have issues. I have pretty good FPS and connectivity, but for some reason all of my outbound actions (moving, jumping, using skills, etc.) seem to transmit to other people 2-3 seconds after i perform them, however when some else moves or something i see it in real time. I also have the same problem with Ventrilo where my voice transmitting seems to lag behind a few seconds while other peoples voice doesn't. I have tried using my laptop on different connections at different places (My brothers house and a friends house), however i still have the same problems there. I even tried connecting to a land line instead of using wireless. So this leads me to believe it is something on my computer that is delaying my outgoing actions. Hopefully someone out there knows a solution to this problem and can help me fix it with relative ease. I know enough about computers to get me by, I know quite a bit more then the average person, but am by no means a genius when it comes to computers.

Also i have noticed that Counter-Strike does not have this delay for some strange reason, not exactly sure what this means.

P.S. i have all ports required on my firewall and router open to allow WoW through so this shouldn't be the problem.