mbox vs pine

[dmorin at lear.morinfamily.com (Duane Morin)]

During my DNS troubles i noticed that pine was taking forever to run
for me.  Thinking the two related (and always fearing that I've been
rooted) I run "mail" instead just to make sure that I'm still getting
mail.  

After leaving 'mail' I see that it has moved some of my messages from
/var/spool/mail to mbox.  No biggie.

But now, when I use pine (which works), the first thing it tells me
is "Moved x bytes of new mail from /var/spool/mail to mbox."

Whassupwitdat?  I don't think it's doing any harm, but lord knows I 
do hate change. :)  If I just blow away mbox will it go back to 
reading it right from /var/spool/mail?  (One of the reasons I prefer
to keep it there is because I have a windows box that pulls mail in
over POP and if I move it to mbox it will look like it's gone).

Duane