firewall problems
 

Hello,
I am having a firewall problem;everything was fine with limewire until last week when I had decided to go wireless(I was wired to my router+modem) as soon as I remove the ethernet cable, the firewall icon appeared,and from then on everything is "pending" and the download is slow whenever I can get them. Other than going wireless I had changed no setting.
any solution?. please help.
Thanking you in anticipation
:(