I have upgraded us to the latest codebase, which you'll see in the upper right hand corner is now v0.2.2.
We're still running on Postgres 8.3.
We're still running on Tomcat 5.5.
But one of the changes includes a new Postgres database driver (Scott upgraded the driver from 7.4 to 8.3 a while ago, but I never got around to deploying those changes.)
With these code changes, you should see some relatively significant speed upgrades, according to Scott.
As always, let us know if you notice any issues.