Second level cache unexpected behaviour

The problem is described at http://stackoverflow.com/questions/3849527/nhibenrate-second-level-cache-unexpected-behaviour

I didn't write a test project because I don't know how to test if the request hits the database or the second level cache. In my tests I have show_sql option set to true in nhibernate configuration file so I can see if the database is queried or the data is pulled from second level cache.

The result of my tests are independent of which cache provider I choose.