I was using Linksys successfully until I did a firmware update about a month ago. The firmware killed the router. I'm fortunate that even though the router was 2 years old they issued a RMA. I'm using a crappy little Trendnet router now that has a wireless range of about 10 feet.
I should have left good-enough alone and not install the new firmware.
Same thing happened to the I-Pods that were hacked a while back. The firmware update was designed by Apple to kill the phone....Neat trick....
I can't imagine why buyers of Apple I-phones took it in stride and bought another....
Weird....