I have two updates for CSLA .NET for those who are interested.

CSLA .NET version 1.53 is now available from www.lhotka.net/cslanet/download10.aspx. This is a minor bug fix update to 1.52.

A beta of CSLA .NET version 2.0.1 is now available from www.lhotka.net/cslanet/download.aspx. This includes fixes for a number of bugs and errata (which you can find at www.lhotka.net/cslanet), as well as some minor enhancements due to unforseen limitations around areas like threading and polymorphic child objects. If you get a chance to try 2.0.1 I would appreciate it. Barring any negative feedback from the community I expect to finalize it in about a week.