"LimeWire was unable to initialize and start. This is usually due to a firewall program blocking LimeWire's access to the internet or loopback connections on the local machines. Please allow LimeWire access to the internet and restart LimeWire."

I was able to use LimeWire with no problem then one day I got on and I get this message.

I have Windows XP (Yes, I have a XP firewall on, but I have it to allow LimeWire and also LimeWire was working with it on.)
I use a router and the Router firewall is set to let LimeWire through and this is the only computer that has LimeWire.

if you need anymore info to solve this problem go ahead and ask.