Have you set LimeWire to use port 36646. And I see you are running McAfee, It is know to cause problems with LimeWire. You may want to check out the link below. You will have to get a hold of McAfee for there fix or uninstall McAfee and us another AV program.
http://www.gnutellaforums.com/showthread.php?t=66843
By the way you appear to be propperley forwarded