I have had similar problems with sluggishness, even after four
Also, if I try to drag an email into one of my folders, the
folder name link flickers and is almost impossible to "catch". I
end up having to right click and "move to" ... This is time
consuming and frustrating
Everything else about Mountain Lion is great, as far as I have
tried it so far...
I had to take my computer to the Apple Store when I had this problem. The Apple Genius went into a couple of Libraries and moved the files to the desktop. Since all my mail was on gmail or iCloud IMAP servers, the Mail mailboxes were recreated. Sorry that I did not memorize which libraries were emptied to start over.
I assume that one of the Mail store files had become corrupted.
9 Posted by Barbara Wiercioch on 13 Aug, 2012 11:30 AM
I have the same problem and the Mail is not responding at all
making the whole system crash. I have to shut down the computer
every hour or so as it keeps going into overload with the fan
whirring away and the apple of doom spinning. When viewing
messages, I can see icons from the menu bar which is very very
strange. Sometimes I can't even type messages as it will not let me