At 04:29 AM 26/03/2009, you wrote:

>I finally tracked this down to a known bug.
>
>http://tracker.firebirdsql.org/browse/CORE-1958
>
>Dmitri writes that the bug is fixed in ver 2.1.2, but this is still at RC1.

RC2 has been available for three weeks.

>How much of a risk is it to use this in a production environment?

RC2 should be good to go. No issues yet.

./hb