Weird behaviors after baking mixed lights (same prefab, different behaviors)

Hi everyone, I'm trying to developing a 3d application featuring a road tunnel with sidelights, so I'm trying to learn how to master baking with lightmaps and light probes.
I set my tunnel section prefab (10m long) to static, I added two mixed mode spotlights per section and then I tried to bake.
The result I got is quite strange cause different instances of the same prefab gives different light behaviors;

Here some pics to show what I mean:

Result of the bake: http://i.imgur.com/zrGqG7Y.png
What I get if I disable light sources: http://i.imgur.com/aICqPzz.png
Settings of the light components in the prefab: http://i.imgur.com/8qo6J3A.png
Disposition of the probes: http://i.imgur.com/o2yTDpb.png

So as you can see, the first section has a complete bake of both lightmap and probes, but it doesn't light up dynamic objects, while the other two sections only have the lightmap, while the spots are still somehow realtime (and they light up everything).

The question is, why? Is the bake algorithm failing at some point? Am I doing this wrong?
Note that I'm trying to find a way to have some lighting on dynamic objects too.