weird ambient occlusion shadow i've been working on a small oven model and i have a problem with the AO bake,
for whatever reason there is a big round shadow in middle of the front and i have no ida what causing it.

Here is a screenshot of what i mean



and on the rendered ao texture



any idea whats happening?

edit:
i'm using blender render with approximate setting

edit2:
blend file
For me it looks like a somehow artifact of Approximate method of calculating AO. If you slower Error value in Approximate settings, you will likely get rid of this effect (and increase your baking time):



(I added Edge Split modifier here)

If using Raytrace method (like it's already described here), results will be similar, but at the same time you'll have more control over settings (actually, over baking time):



.blend