Ambient Occlusion Issues

In Blender, I have a network of glass struts. General rendering achieves a somewhat nice effect (first picture). Turning on Ambient Occluison adds even more realism (second picture). However, all the glass struts that run from the front left to the back right of the image are way too dark for some reason. Any ideas on ways to make these struts bright as well?

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I moved the thread to the more proper Lighting Category at:
http://blenderartists.org/forum/showthread.php?t=84752

Please use that thread instead. Thanks!

Hymie