Ed,

> which version of firebird is stable..

All of the versions are stable, as much as anything can be.

The latest release 'Beta2' is installed in a number of locations and has
not had any notabled problems reported.

The next release, 'RC1', due very soon will include yet more fixes...

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Sean Leyne
There is nothing wrong with Interbase,
that can't be fixed with Firebird.
www.FirebirdSQL.org