I have been using SlingPlayer on my Macs for ages with no trouble. Suddenly they are all exhibiting the same behaviour as follows: I open Sling Player and it connects but does not stream. If I click the start/stop button a few times it starts to work. As soon as close and re-open it does the same thing. When I turn the firewall off, it streams as soon as it opens without a problem. The Sling Player is in the Mac's firewall settings and always has been, and its never been a problem before. I have added and removed Sling Player from the firewall and rebooted the slingbox but its still will not start to stream on load up until I turn the firewall off. This is happening on all 3 Macs here and it never used to. Any ideas?