> What OS platform are you running?

We're running Redhat Enterprise Linux 2.1

> What version of the engine?

I'm not sure what you mean by engine, but we use FB 1.5.1

> Please define "tremendous" and the areas you see the improvement.

A web application previously almost unusable, almost no reponse, is
now usable. A list which previously took about 3 minutes to load, now
takes less than a second. I can't give specifics or statistics yet,
we just did it a few moments ago.

Regards,
Faisal