There is a strange problem happening to me. When I want to ask a question, a message saying “You can only post once every 20 minutes.” shows up. As far as I remember, what I did in the last 20 minutes is flag my own question due to low rating in stackoverflow.com.
Is this 20 minutes penalty applied across all Stack Exchange sites? That is, when you have asked a question in Stack Overflow you cannot ask in Ask Ubuntu for the next 20 minutes? And is the penalty applied not only for questions but also for flags and answers?