I read this on firebird-devel:

from Message-ID: 45A4A3E3.1080801@...

> (To answer Helen's confusion) Yes, currently 1.5 packages are named
> firebird2 (with version like 1.5.3.xxx). This is a known bug that will
> be fixed. It won't enter the upcoming (within a month or two) release,
> though. the real 2.0 packages will be named firebird2.0 (with version
> 2.0.xxxx), 1.5 will be firebird1.5 etc.

I send a transportable backup of a little testdb from my opensuse 10.2
box which has installed
http://prdownloads.sourceforge.net/firebird/FirebirdSS-2.0.0.12748-0.nptl.i686.rpm
to an ubuntu user witch installed firebird2-super-server and
firebird2-utils-super from ubuntu.

This is what happend on his box:
++ gbak -c -v -user SYSDBA -password foo all_types_fb2.fbk
localhost:test_all.fdb
gbak: opened file all_types_fb2.fbk
gbak: transportable backup -- data in XDR format
gbak: backup file is compressed
gbak: ERROR: Expected backup version 1, 2, or 3. Found 7
gbak: Exiting before completion due to errors
juser@v550b:~/test$

I'm currently not a member of firebird-devel, so i posted it here.
Can you elaborate?

Thank's,
Uwe