I have a 21.5" iMac and have had a constant problem throughout Mountain Lion and Mavericks and that is that whenever I send an email in Gmail, the system can put anything up to 20 copies of the email into "Trash", each copy having a few more words in it than the copy before. I did think that, perhaps, Yosemite might possibly solve this problem but, apparently, not! I cannot believe that I am the only one suffering this problem. Anybody else had this and anybody else got a fix???