This is my first post here because I'm about to throw my MB 13" across the room. I have been using this MB OSX 10.5.5 in the same spot all summer and have been connecting to a Belkin wireless connection with no problems. It's the wireless connection at my work. I have also been connecting to my home network on a linksys router.\ A couple of weeks ago, my airport card just decided out of nowhere to drop connection to the work wireless. I had changed nothing and the router moved nowhere. It works for about 10 minutes then looses signal. It is not able to connect or find the network unless I move 15' closer to the router. Every other network I try within range doesn't work either. However, once I leave work and am home or cafe, etc... I can get signal no problem. Does anyone know what's wrong? It just dropping out of the blue is killing me! Thanks in advance!