Let me save you some time. You can't use SQL 2008 SP2 or R2 for beta 2. You must use SQL 2008 SP1. I'm sure we'll support R2 in future betas, but for now you need SP1.
Our session "BB25 Service Manager Troubleshooting and Notes from the Field" was a huge success. Great scores, great feedback. I'll be posting some of the content I created for the session in this blog.
Mandalay Bay was ok, but I'm really glad we are moving back to the Venetian next year.
If you are attending MMS 2011 next week (which is SOLD OUT!) look for me. I'll be at PFE booth in the MS area of the expo area a few times during the week and will be presenting the topic "Service Manager 2010 Troubleshooting and Notes from the Field" on Thursday morning at 10:15. See you next week!
If you are using FEP 2010 you might see these messages in your ConfigMgr environment: 
FEP 2010 has a monitoring service that checks for new events every 2 minutes. That process generates the 30102 and 30103 status messages but it doesn't record what component is generating the event (as shown above). So, you'll see lots of 'Unknown Machine', 'Unknown SMS Application', 'User "UNKNOWN"' type of activity in the status messages. This scenario doesn't cause any issues, it just makes understanding these messages difficult if you don't know what application is generating these messages.