Update the firmware on your routers to the newest version.
Is there any interference in your area? What I mean is, is there perhaps other 2.4GHz signals on that is using the same Channel?
Just FYI... but I doubt this would be the cause. I know wireless land phones that operate on 2.4GHz can easily interfere... mine does, have to just about always hit the channel change button once when I turn it on, otherwise it messes up my wifi.
I'm not sure on OS X but I believe there is some form of Stumbler program that can view what wifi are up in your vicinity. I know on PC its called Net Stumbler. (Sorry as I'm rather new to OS X, but I recall seeing it in the past.)
Oh curiousity question, which type of wireless network are you connecting to? G, B, N?
But yeah, as DocSmity said, it might be a firmware issue. 🙁
tech support and ended going to the store picking up Airport Extreme. Now airport extreme works fine with mbp, but all my pc laptops are f##ked because they only do g or b, which AE supports as well, but for some reason my PCs on wifi cannot acquire the IPs, so consequently Im not the happiest of the campers right now as well...😡I had the same problem, my dated netgear wgr654v5 and my new mbp didnt want to work together in wifi, ethernet was fine. Was on the phone withtech support and ended going to the store picking up Airport Extreme. Now airport extreme works fine with mbp, but all my pc laptops are f##ked because they only do g or b, which AE supports as well, but for some reason my PCs on wifi cannot acquire the IPs, so consequently Im not the happiest of the campers right now as well...😡