At the very top of the of the User.cfc in the UserManager sample application, I notice the there is a note that says:
In order for this CFC object to map correctly to an actionscript class, we must define each public property and the type, which maps to the public properties of the actionscript class.
It's followed by a cfproperty tag for each public property in the user object. It has been my experience that cfproperty does pretty much nothing unless you are trying to define a hash-map in a web service. Has this changed with respect to the CFAdapter? If I comment out the tags, the application appears to still work (although I seem to have some issues with caching sometimes).
I have posted this entry in Labs as well.