Limewire not getting through firewall

I'm having a problem with limewire 4.0.8, I was using it fine for a few weeks and then all of a sudden i started geting messages that i didn't have a connection to the internet lime waire was being blocked by the firewall, running XP SP2. I have made no chages to the firewalls on XP or norton, I've checked to see that limewire is allowed through on both FW's, I've even shut them down 1 at time to isolate the problem but no luck, when I start LW it says conecting and appears to start downloads in queue but a after a few minutes its give the firewall warning again, I've delete the .LIMEWIRE folder a few times but nothing. if anyone has any helpful suggestions please let me know, otherwise I will have try some other software. 1st I though it was maybe limewire doing this so that I would buy their LW pro. but after reading the this forum I'm not sure anymore.