I am having the same problem...
I am running windows xp
I have checked the firewall
I don't know how much ram but i am sure it is enough
Should be harddisk space
Broadband connection
I have a belkin router
connecting from house
Limewire 5.3.6 Java 1.6.0_11
I think my appartment complex has direct for their service provider.
The Test did worked...
no sharing as far as i know.... i use my wireless laptop sometimes but not for music
i accidentlly upgraded from the old limewire and have not been able to use it since....majorly sucks
i don't see the brick wall but LW never connects.... i see "connecting....."
i have advast for virus protection but had that before
i am in the U.S.A.
I have not changed anything but updating LW