We are building an ASP.NET MVC application utilizing NH for data access. Using NH Profiler I see a lot of warnings like "WARN: Narrowing proxy to Domain.CaseTask - this operation breaks ==". I get these very often when executing queries for classes which are mapped in a table per subclass, for example, using the NH Linq provider:

Query<ICaseTask>().Where(c => c.Assignee == Of || c.Operator == Of)

where the class CaseTask inherits from Task, triggers the warning.

Information about the warning in the internet is scarce and mostly hints that this is something to be ignored... What does this warning warn about exactly? Should this be something I should seek to correct?

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