I am not having any issues, at all. I was told, and actually believe, that smart device Wi-Fi radios are voluntarily weak to conserve battery power. I have 2 bars when 30 feet away and behind 2 walls, and it seems to be quite enough for my needs. Wouldn't a more powerful radio signal, such as the ones we get from a powerful 1st tier Laptop, be a considerable drain on the small battery of a phone?
Perhaps I'm misled, and the Atrix really is weak, but I've seen I-phones and other smart-phones having just about the same connectivity on the same Wi-Fi networks that I use. This leaves me wondering if I'm either lucky, lax on Wi-Fi performance expectations or if some people are simply expecting more than what Motorola thought was a good compromise on power management/power consumption ratio...