DuckCall didn't work work under Leopard. Noone really noticed, so I assume noone uses it. Which is probably a Good Thing. But if you were sitting on the edge of your seat, waiting for a compatibility release, you can now relax. DuckCall-0.0.3.zip is now available.
It's also 80k zipped, as opposed to the 3 megs of version 0.0.2. Hurray for bundled PyObjC. This means that this version will only work under Leopard. But there are no other changes between it and 0.0.2, so all you laggards don't need to feel left out.