I had the Linksys BEFW11S4 ver.4 for around 2 months(1 month on the newest firmware) now, everything worked nicely until today. All of a sudden it stopped routing internet access. I could still view my network and exchange files within the network, but couldn't access the internet. Reset to factory defaults, and the problem got fixed. Two hours later, same thing happened! Unplugged it from the wall and plugged it back in, fixed the problem again. Does anyone know the source of the problem?