limewire files will not download
 

i'm new to this gnutella forum...
i have limewire 5.5.10 - pro
java 1.6.0_14
windows 7, laptop using cricket wireless broadband
before i payed for lw pro, i could download most vid files...
i haven't been able to download any vid files since i paid for lw pro...
LW states that i am a 'leaf node', behind a NAT firewall... i cannot figure out what firewall i am behind - i even tried turning off the windows 7 firewall... still states that i was behind a firewall...
only anti virus is avg, which came with LW pro...
i've searched and searched and cannot figure out why i am not able to download vid files... any help?
(maybe i should delete LW pro 5.5.10, and download LW 4 or something? it worked)
thanks!!!! =)