Cloth simulation appears corrupt in render I am having problem with a cycles render.  My cloth simulation for a flag bakes just fine and seems to work.  When I render the image gets fractured (it looks like broken glass instead of cloth).  See attached images.

Someone said to post the blender file.  I can't figure out how to do that.
OK, here is the link to the file:
http://www.pasteall.org/blend/31495

I can't figure out which setting to change in the render settings to get rid of the "z fighting"
This is because the cloth simulation is baked using the viewport settings of the modifier(s) above it.
As the subserf modifier above it has a viewport subdivision level of 1, but a render subdivision level of 2, the vertex locations stored in the cache are nonsensical when rendering.
To fix this, just set the render subserf value to 1:

If you still want to use two subserf levels, you have two options:

Re-bake, with the viewport subdivisions set to 2

Add another subserf modifier below the cloth modifier. These subdivisions won't be taken into account with the simulation, but they will smooth the result out a little bit (though a smooth modifier could probably get you comparable results with a lot less vertices), and you won't have to rebake.