yes i too have that icon saying limewire has detected a firewall, but i have put it through the firewall in xp, i can download and upload but still for me, don't know if it is still causing a problem, my bars at bottom show turbo, so not too sure, why would it be detecting a firewall when i have allowed it through the firewall,
xp sp2, no other firewall on comp, only norton antivirus, and pretty sure that ain't got one, not that i'm aware