Anyone noticed problems with Mail since the last set of updates? It slows down so much now on my iMac that an email sometimes doesn't even open if you double click on it - I can hear the processor hard disk going crazy in the background. Also emails disappear from folders if you select them from list and they were previously unread. The only fix for this is to go to another folder and then come back and hey presto the mail is back in the list (now marked read), or simply to mark all email as read, which I now do before attempting anything. My email is synced with Gmail. It's annoying not to be able to have to have marked all mail as read but I could find no alternative.