limewire says i have one bar of connectivity and it yields no results when i try to search.. i just got this computer from a friend.. windows xp and i am behind a router but no firewall to my knowledge. Limewire says i am behind a firewall although i can't find one except for windows firewall which i have turned off. Other computers on this network download fine. I have also tried opening up ports on the computer. still nothing.

What should i do