Ridiculously high ping problems

Speedtest.net(100~ miles), team fortress 2, and warcraft III are all getting ridiculously high pings, 3000+ ms. Sometimes it goes way down to what it should be at like 30~ ms but I have no idea what's happening. It happens with wireless and wired connections to my network.

On speedtest I get similar upload/download speeds compared to other non-windows 7 PCs on my network, just a really high ping. Believe it has to rest with the operating system, because I wasn't having this problem with XP.

Hardware:
I use a dell XPS 1530 laptop. It has a 8600M GT nvidia card, intel core 2 duo 2.16 Ghz processor, dell wireless 1395 mini card etc.

Drivers:
I've installed a windows vista nvidia driver, and a windows update wireless card driver. Everything else is what came with the 7100 release candidate.

Network:
The network uses WPA2-Personal security, has several computers and 2 file servers connected to it(all with fine working internet), with a DIR-165 wireless N router.

Attempted:
-Disabling auto tuning on the command line(It might reduced the severity of the spikes, but they still make online games unplayable)
-Disabling windows media player in the services
-Using a vista wireless card driver
-Using a windows 7 nvidia driver
-Using only hardwired and disabling checksum offload in configuration
-Reinstalling windows 7(the problem exists in the base state of the OS, and after downloading windows updates, and after trying fixes)

The problem persists

Update #2:

Problem is with Airport(The mac wireless program thingy). Temporary solution of having the mac connected through a wire. Anyone encounter this problem before?

Edit:Temporary fix did not work. Turning off airport would give me a "normal" ping though, atleast temporarily...more testing is needed.