Also, your Ip Address could have expired and you obtained a new one. See, your ISP gives you an Ip Address to use for a certain amount of time, and when it expires, you obtain a new one. Here's what you should do to check if that happened. Go to "Start," then to "Run" and type in "cmd" (without the quotes). A black screen should appear (DOS Prompt). In the that screen type in "ipconfig/all" (again without the quotes). If you see that you have a different Ip Address then the one that is set for port forwarding in your router's configuration, then you need to change it to the new Ip address that is there. Hope I could help.

P.S:@ Varion: I believe the "green light" that she told you about is basically an "informer" telling you how the Bittorrent connections are in the Bittorrent client "Bittornado." When it is a green light, its telling you that everything is fine. When it has a yellow light, it's telling you that you are having Router/NAT problems.