Can't move Objects just a little bit When I want to move sth or to scale an object, I can't move it just a little bit, it jumps to certain positions and I don't know why...
It sounds as if you've got Snap set to Increment... uncheck this button



During transformations:

Invert the Snap button's state by holding Ctrl

Gear down transformations, either in the numerical field, or in the 3D view, by holding Shift.