problem with my Airport Extreme...

just bought an airport extreme yesterday for my wireless network at home. i have a MBP, G5 and a cube. the cube is directly connected to the airport and works perfect. the G5 is in the computer room and it also works perfect on the wireless network. but for some reason, my MBP runs super slow on the wireless network, but works perfect when i connect it directly to the airport. i know it cant be my airport card in the mbp because i use a wireless network at my work with no problems.

can anyone help me out???

i was real embarrassed because i had previously bought a belkin router, which i got a killer deal on ($25), and was when i saw that the wireless network was running slow on my mbp. i gave a hard time to the people at belkin and thought if i dished out the $150+ with an airport, everything would be perfect. turns out this was not the case.

wow. i saw about 10 threads on this, and none of them had any solutions.

i was on the phone with apple for a couple HOURS today and none of the technicians could help me out. im really disappointed with the quality of customer service and lack of knowledge these "genius" techs have. the only thing they could tell me after we went through all the steps was to wait for an update that would fix the problem.

has anyone figured this out yet?