matchmove

I have a problem and I really need help.
i have been trying to match move in blender and any time I track a footage and place an object in it, the object keeps sliding and does not stick to the ground. I forgot to mention I get good track errors, like 0.6. I am using blender 2.67b. I have also tried tracking from boujou 5 to blender and it still keeps sliding.

Any help ? Please…

Are the solved 3D points also sliding or not? If track is good then your geometry is in the wrong place - not on the ground but above or below it and so you get sliding.