Fairly often, when I wake my PB from sleep or turn it on for the first time each day, I will find that I can send and receive mail, but that no link will open in any browser. The brower (Camino, Safari, Mozilla) will tell me that the site can´t be found. Same applies to directly writing the link into the address line. If I turn Airport off, then on again, and ask it to connect, it will work as it should, and everything will be fine til the next time I start from scratch. Why?