> I have downloaded Firebird-1.0.0-RC1-Win32.zip from
> http://firebird.sourceforge.net (timestamp of gbak is 2001-11-19,
> 1:00:00, version 1.0.0.567), but the problem remains.

A number of fixes have already gone into the code base since 567 (RC1), so
its possible that the bugs you are referring to may have been cleaned out
since 567.
I suppose the only way we are going to make sure is to supply an RC2 in the
near future.
Claudio is probably working on a build that he created himself from the
current source tree - hence a build no. of 609+

Regards
Paul