I hope someone answers this for you. I had this same experience and
reinstallation every time you boot up and want to see your e-mail is clearly
not an answer. My Outlook 2007 finally just stopped working altogether.
After trying several System Restores, I finally concluded that the only
solution was to uninstall the beta, although it did have some features I
liked, and drop back to Office 2003. Even that was difficult. I had to
reload the beta several times before it would give me an uninstall option.
Finally got one. And -- good news -- when I uninstalled the beta, Outlook
2003 no longer worked, either. I think it must have been affected in some
(adverse) way by installing Ooutlook 2007 over it. I then uninstalled all of
Office 2003, and did a full clean reinstall. 2003 (including Outlook) seems
to work fine now -- finally! I guess I'll wait until the beta is no longer a
beta before trying 2007 again.
One question: Did you (as I did) install the beta right over Offfice 2003?
Apparently you can install the beta and retain older versions of other Office
programs, i.e., MS Word 2003 and MS Word 2007 can exist on the same computer
without interfering with each other; each will work, just depending on which
you open. I am not sure, however, that the same is true for Outlook. Maybe
they should be telling us to wipe whatever earlier version of Office (or at
least whatever version of Outlook) we are running before installng the beta?