Rails and Firebird 2

I am considering trying out Firebird 2.0.1 with my Rails app. I
currently use MySQL. I am told that Firebird offers good performance/
features, and is free to use under any circumstances (project
contributions aside) unlike MySQL.

I have managed to get my Rails app to talk to a Firebird DB through
use of the Fireruby gem, but it was necessary to first set up links -
e.g. "ln -s /usr/lib/libfbclient.s0.2 /usr/lib/libfbclient.so.1" - to
overcome a problem whereby the require_gem 'fireruby' was complaining
that it could not find shared object file libfbclient.so.1. Has anyone
else experienced this problem?

Are there any other approaches that I may have overlooked?

I would also be grateful for people's experiences with Firebird and
Rails.

Thanks.