Hello Joe,
I just bought a new router which I intend to install tonight. I am hoping that this will help performance consistently. Adapters on my older laptops consistently perform well with WRT54G router while this one doesn't and in fact I did not find a setting that will get performance level of Intel® Centrino Wireless-N 6235 same as the others. The difference is is between 15x to 2x slower. This is why I asked if there are any known issues with WRT54G. Once I install the other router (Apple Time Capsule router/storage) I will report the result here.