I know we have the same problem. My Limewire works fine whenconnected directly to my cable modem but when the linksys, wireless G router is put in line, Limewire detects a firewall. I have had some problems with the router allowing multiple computers to access it but soved them with Cisco--it was a long process getting thropugh to them however, and I'd really appreciate and help avoiding that enourmous company. I have no idea how to tell the router to cut it out and let me share files. I'm running OX 10.5.5 on a duel g4 powr PC based mac. Thanks for your help