Using ATT Galaxy Note 3 - Thought I knew this great phone, but I get this message every couple of weeks, and ONLY when I get the message, is there a box in upper right hand corner with the number 50 in it. I can click on it, and erase all the "open windows". I cannot find anything, anywhere, that identifies how to close out these ghost windows prior to getting the message. It must be possible, yes?????