It took me a while first time i set it up to, you might want to remeber how you do it, because if you ever change any settings, the light may go back to yellow, all you have to do to get it back is go through the same process, each time you do it you will get faster at doing it so it shouldnt be a problem
6meg on a 8meg connection, well it is a UPTO 8meg connection so if you do call O2 all they will tell you is that, or out of peak times you may get 8meg, in peak times i get around half of my connection speed, and outside peak times i get top speed, for what im paying for, which is only UPTO 2meg.