I suddenly have this "Unread Mail" folder.  New mail cannot be opened from
the "Inbox" anymore, even though there's a blue # telling me how many mails
are there.  The same # appears at the "Unread Mail" folder, and I can open
that one just fine.  The problem occurs when I'm finished reading a mail and
go to the next one.  The first one disappears and I cannot find it anywhere.  
None of my personal or archive folders have it.  I've even lost a couple
mails because I decided to come back and finish it later and I cannot find
it, and I did not delete it.  This started happening a couple days ago when I
first noticed that new "Unread Mail" folder.  Have I done something to change
the way Outlook works for me?