"Russ Valentine" wrote in message
...

Upgrade installations are and always have been problematic with Outlook,
even more so with betas. Best practice is install Outlook clean and use the
supported methods for migrating your Outlook data (posted here daily).
If you decide to experiment with an upgrade installation anyway, at the very
least you should create a new Outlook profile from scratch and back up all
data thoroughly ahead of time.

To satisfy my own curiosity, I'm going to be choosing "Upgrade" for my
installation of Office 2010 because I want to see what happens to the mail
profile and be aware of what problems arise.
--
Brian Tillman [MVP-Outlook]