Macbook 13" late 2008 with 4GB RAM, I see this issue on Windows machine too
Short description of error
In the attached file I have an object and a duplicate of this object. The object was created by exporting fraom CATIA to STEP, then importing the STEP to Glovius and exporting to 3DS and finally creating the BLEND file from the 3DS.
In the process the object is created with a lot of duplicate vertices (I don't know why...) but with a satisfactory geometry. Without modifying the geometry, I can apply Smooth without problems. The result is OK (object "_object")
If I apply "Vertices -> Remove Doubles" the mesh becomes distorted (see object "_object.001") which results as well in a distorted render result (see areas around holes in render result). If I render the object with Flat geometry and with duplicates removed, the result is OK - but not smooth...
Exact steps for others to reproduce the error
In attached file:
- Select object "_object" (original object after import of 3DS)
- best make a duplicate of object _object
- Go into edit mode
- Apply "Vertices -> Remove Doubles"