Actually, I've no internet connection at home.
When I get it, I can open a project on maemo garage.

The application alerts You when you're approaching a speed camera and stops when You're going away.
You can have false positives (I don't know the side of the road, bridges, etc....)
The free database ( basic access on http://www.gpsinform.com) does not include speed camera.
Roadrunner does not support the premium database.