Every couple hours or so, our wireless Internet will go out. We have about 4 computers connected, and the only way (for my Macbook at least) to get back online is to turn Airport off in the menubar and back on. As soon as I turn it off and back on, the computer is online immediately. We have 4 Macs running on a Linksys WRT54G router/network. I'm assuming it's the router, but want to make sure before buying a new one.