said by NormanS:I have an account. Might be some script that NoScript is blocking, even though I have all visible scripts enabled at youtube.
And watch more YouTube; a lot more. You don't have enough data points on your connection to display your performance. Hmm. Even signed out, I still show my connection performance, so maybe you need to have an account, and be signed in to accumulate data. Makes their graph even more useless.