Thanks,
It isn't in production yet although my client would like to make it production next weekend. I have been pretty thoroughly testing it. The full functionality of OWA is a big item for my client so I'm hosed either way. I guess that is why I was asking if there is any way to uninstall SP1 beta - then I could just install SP1 when it officially comes out.
I have been using my personal e-mail account on the system for a couple of weeks so it seems fine for end user use but if I can never upgrade it, I don't want to go that route.
I guess I don't really need any more support for it, other than being able to apply the official SP1 when it becomes available.
If my only choice is to stay on SP1 beta and never be able to upgrade or stick with Exchange 2007 RTM "as is" the best choice might be to just roll out another 2003 server which works better and wait for 2007 SP1 - which seems rather unfortunate and costly for my client.