NHibernate 3.0 has gone GA quietly on December 4. For those that used the Alpha 1 together with Castle Windsor, there might be some obstacles!
NHibernate.ByteCode.Castle was updated to use Castle 2.5.2, which now has changed it’s assembly structure. Castle.DynamicProxy2.dll was merged into Castle.Core.dll and Castle.MicroKernel.dll is now included in Castle.Windsor.dll.
If you have dependencies again taking dependency on MicroKernel or Dynamic Proxy, in my case MvcTurbine, a simple assembly redirect wont help. You will need to recompile third-party libraries or wait for a new release.