Older versions of YAM allowed mails to be selected without changing their status from New. This new version automatically selects and opens the last new mail. I'd rather double-click to open every mail rather than have the mailer do it on its own.
I am on your side here, I changed this first thing. Here you go: Turn off "Show embedded read _pane in main window"

Now, here's my problem: I get this:

ALL the time. And YES I have done what it says, more than once. This does not happen on my girlfriend's stupid Peecee with UAE, but YAM has other problems on that piece of crap.