i dont know if this will work for you but yesterday i managed to change my light from yellow to green but i waited till this morning to check it had still worked as usualy when i shut down and restart it goes back to yellow but it hasn't if your running xp try this -
GO INTO ADD/REMOVE PROGRAMS AND CLICK ON
ADD/REMOVE WINDOWS COMPONENTS THEN
CLICK ON NETWORKING SERVICES AND PRESS DETAILS AND IF PEER TO PEER HAS NOT GOT A TICK ON IT TICK IT AND SAME WITH UPNP THEN CLICK NEXT
YOU SHOULD GET A GREEN LIGHT ON STATUS ON BITCOMET AND UTORRENT I TRIED IT ON BOTH WERE I HAD THE SAME PROBLEM AND IT HAS WORKED
I HOPE IT WORKS FOR YOU IT LIKE IT HAS FOR ME PLEASE LET ME KNOW IF IT DOES SO THAT I CAN LET A COUPLE OF OTHER SITES KNOW WHO ARE HAVING THE SAME PROBLEM 
TRY (PORTFORWARD.COM) FOR CONFIGUREING YOUR ROUTER it has a very wide range of routers on there
ALSO PLEASE READ BELOW
i found out something......
