Blender particle system objects not colliding I have a simple particle System of falling balls but they won't collide to each other like in nature.
What am I doing wrong, what have I forgotten?
My aim is that the balls have volume and stack up like real putting them in a barrel o.s.l.t.

Thanks for any kind of help!

My current .blend of this http://www.filedropper.com/showdownload.php/schneemann
Add the collision pannel under Physics, turn the Particle Friction up... hope this helps.