slow behavior of physic objects

Hello, i know this is a stupid question but how
can i change the speed of the simulation? My objects
are all moving very slowly, and the gravity is too low.

You can see a movie of this here:
http://www.youtube.com/watch?v=ET_iX9Q1Xl4

My initialization:
when creating the world: "time-controller: ogre"
when creating the scene: "gravity: yes, floor: no, renderer: ogre"

Maybe just the gravity is too low? I tried to change density and mass,
that does not bring the expected effect.

Thanks for help,
Regards
Christian

if the gravity is too low, set a higher gravity value: NxOgre::Scene::setGravity

Thanks =) it works