Objects linked together when moving

I am experiencing a problem where when i select one object on my scene to move it all the objects of the scene are moving along it. I checked all grouping or parenting, they do not exist.
Anyone can help ?

Ensure you don’t have proportional editing enabled http://wiki.blender.org/index.php/Doc:2.6/Manual/3D_interaction/Transform_Control/Proportional_Edit

Thanks !
That’s was the problem

Very nice. I hadn’t noticed that prop-edit can be used in Object as well as Edit mode. (Grr… which I’d known about that about a month and a half ago.)