Gk_azule

I recently built a new computer, and installed Vista Ultimate. Now, when I
try to surf the web, the pages load really slowly, and when I go to
Speedtest.net, my upload and download rates are decent, but the ping times
out at 999ms!
I also notice when I play online games, when the computer first connects to
the server, there is a huge lag, but withing about 15 seconds it smooths out
and I can play the game. Does anyone have any suggestions as to why this is
happening and/or what I can do to fix it?
BTW, I have updated all my drivers, so I'm reasonably certain that's not the
problem.