I would like to add...the most frustrating part that I have issue with is
that ever since the reading pane problem began, I can view new email only by
fully opening it. Once it is open, any attachments that were sent to me from
my clients will not open.  I am also having problems attaching my own files
to emails that I am sending.  Restarting has fixed this but the fix is very
short lived.  I'm not sure how much longer I can go on without seeing my
files.  I hate to think that faxes will very soon become my backup plan since
so few people have home access to fax machines these days!