Shooting Prims?

I have a question I'm hoping someone will assist me with.

I make an object. I check it's base position, where it's solidly resting. I create a second object that I want to center on the first. The base position on the first is, say, 100.000. I go into the editor on the second object, type in the identical base poisition as the first...

..and my object zooms like a rifle shot to the other side of the sim, likely flattening several poor avs during it's journey.

Why does it do this?

I'm not quite sure what you're doing here... the base position should be a vector, that is there should be 3 values not just one. Entering the numbers should work. Maybe you're looking at the wrong box somehow? Are you sure the two objects are in the same sim?