I've been havine the same connection problem lately also. The green spot would flash for a second and then go back to red. If I let it sit for a while, Limewire would eventually connect but my downloads are much slower now. I live in a dorm at school and they have blocks also, but they only slow down your connection and you can turn them off. My school doesnt have a block on mac run file-sharing. I think it is just a bug in Limewire.