As stated in the Exchange 2k3 documentation, you should upgrade all of your
front-end server(s) before you upgrade your E2k back-end servers.
Does anyone see an issue the the duration of time between the two upgrades?
Specifically, what if weeks or months are between? I assume that once you
run forest prep and domain prep for 2k3, the time between is irrelevant and
one could go as long as they wish. Any comments?