System Information
Windows 7 64, GTX 980

Blender Version
Broken: f337fea + ee2b583

Short description of error
I have a problem with linked groups that contain any mesh modified by a curve modifier.
If the linked group isnt placed in the scene origin, the topology goes crazy if I change the viewport shading (Solid to Textured Mode).

Steps:

• Create any Curve object (circle recommended)
• Create any Mesh object
  • Give this Mesh a Curve Modifier
    • Use Curve as target
• (Make sure to edit curve and mesh to fit eachother and have some noticable deformation)
• Assign both objects to a Group
• Save file

• Open a new file
• Switch to Solid Shading Mode
• Link the Group to this file
• Move the Group object away from the scene origin

• Bug: Switch to Textured Shading Mode = weird deformation

Note: The weird deformations are more extreme if you move the group object further away before switching to Textured Shading.
Note: No weird deformation if the group object stays in the scene origin. I guess there is a problem with curve-mesh-origin relation in linked data.

Not sure if this is related in any manner (he had problems with the shading as well):
T44154