If I delete an entity within a transaction that has other updates, the delete works fine. If the only action I take within a transaction is a delete, then it is never performed when the session is flushed and the transaction committed. I've monitored the database operations with SQL Server Profiler and the DELETE statement is never sent.[/code]

We have FlushMode set to Never, and do flushing at required times like in our front-end method to Commit (although we could probably have set the FlushMode to Commit). However, if we flush before and after each individual delete, the delete goes through. Weird ...

Did flush the session before or after the commit? If flushmode is never it seems like you would have to flush after commit.