Strange light bleeding

[JessieG]

Up the light map res for those and make sure the UV borders have a decent amount of padding between shells and the edge of the 1 to 1 space.

Or cover the seams with another static mesh.

[majic12]

I was placing custom meshes in the editor but everytime i render using lightmass(production quality) i can see some light bleeding where the meshes join.If i render it without the light mass option everything is ok.Any ideas how can i fix it?

http://imageshack.us/photo/my-images/38/dibujonkj.jpg/