<<Hopefully Dmitry will come up with some answers. He seems to be the man that knows. I’m sure he was one of the IBSurgeon guys at
the recent Prague seminar on performance tuning etc.>>

Just as an FYI - Dimitry is *not* one of the IBSurgeon guys - he happens to be
the Firebird project's lead developer. You can find out a bit more on who
does what re. the project by looking here.

http://www.firebirdsql.org/en/team-members/

Regards
Paul