Firebird is now included in the next ubuntu release (code named gutsy gibbon)
All you will need to do is to type this in the shell
sudo apt-get install firebird2.0-super firebird2.0-common firebird2.0-dev firebird2.0-examples
on my system i have made backups of the databases and removed all firebird related packages
sudo apt-get remove firebird2-super-server firebird2-server-common firebird2-examples firebird2-dev firebird2-common
Then i had some errors related with /var/run/firebird/2.0 directory (seems that this is an bug )
sudo mkdir -p /var/run/firebird/2.0
sudo dpkg-reconfigure firebird2.0-super
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