So about a month ago, my girlfriend's 13 inch 2012 macbook pro started having a problem. When she would shut down her computer with mail running it would freeze up. After about a minute a dialogue box would pop up saying that the application mail cancelled shutdown and to try again. Then when you go to mail and try to quit the "quit" selection is greyed out. So you have to force quit it and then try shutting down again. This problem was localized to just her computer for about a month untill last week when my 2012 macbook pro (retina) and my 2010 27 inch imac started doing the same thing. As soon as it started happening to my computers too I realized that it must not be just her. More people must be having this problem. Are there any fixes for this or do we just need to wait for an update to solve the problem?