System Information
Win7/64, AMD HD 6850

Blender Version
2.63 (r45996), 2.69 (r60995), 2.70 (25ad7b4)

Short description of error
In some viewport shade modes, objects emitted from the particle system are displayed at the wrong location.

Exact steps for others to reproduce the error

1. Open the attached project. You see a group instance in the middle (showing a ring of 10 spheres).
2. Rotate the viewport and nothing special happens.
3. Switch viewport shade mode from "solid" to "material".
4. Rotate the viewport again. Problem: The group instance is jumping to a different location. This should not happen.

Note #1: The group instance contains one mesh object using the particle system emitting the 10 spheres. The group is at the center of a different scene. Please use Ctrl+Left resp. Ctrl+Right to switch between scenes. Otherwise, the problem was not reproducable in an even simpler example.

Note #2: Rendering works correctly, and after rendering, viewport display is back to normal, too.