FBX export to Unity3D -> wrong bone rotation related to its amature

Hey,
When I export meshes and bones from Blender via the fbx exporter the bones got wrong local rotation relative to their amature and also to the meshes within unity. I started also a discussion at the Unity forum which you can find here:

http://forum.unity3d.com/threads/207851-Blender-FBX-export-gt-wrong-bone-rotation-relative-to-its-amature

Can please someone help?