I have a similar problem: the LW 4.14.12 simply WILL NOT initialize. I have updated Java, disapled my firewall, reinstalled several times, and just about everything else I can think of. Each time I try to initialize I get an error message saying that (something) is blocking Lime Wire. My OS is Windows XP SP2, Media Center Edition 2005 Rollup2. Any ideas would be appreciated. It works on other computers I have with the same firewall and antivirus. But this computer is Zero.??????