Blender 2.53 Beta (Problem with Axis point at center for all objects)

Hi, I am using Blender 2.53 Beta and after installing it the axis point for all objects, (lamps meshes, cameras everything!) is at XYZ 0,0,0) So if I move an object it is rotating around 0,0,0 still. I’ve tried resetting the axis center to the object but this doesn not solve it.

I must have accidentally selected something?

Also, can someone please tell me how to resize a brush in sculpt mode using a keyboard shortcut?