System Information
Operating system and graphics card

Blender Version
Broken: 2.71 RC2 (a19c1be)

Short description of error
When defining all limits in "Limit Scale" to 1, it is possible to scale to -1 and flip the mesh.

Exact steps for others to reproduce the error

1. With startup settings, add a cube. In edit mode, scale the top side to .5
2. Add an empty beside the cube. Make sure it is outside the cube.
3. Parent the cube to the empty.
4. In the empty's constraints menu, add a "Limit Scale" constraint. Activate and set all of its minimum and maximum values to 1.
5. Select the empty, and scale it down until you see a change, or just type "-1" to do it automatically.

I haven't tested this with the other constraints. The blend file is here: