LW is connected and has full green bars, but when I click on a file it says Connected and stays that way for awhile, then says need more sources.

Using Win XP, Windows firewall, 512 RAM, a few gigs of space avail, newest LW version, Charter cable, I tried the test and it worked, Im on a wireless Linksys sharing the connection but no other P2P programs in use, LW worked fine before the newest version, yes I have the brick wall icon