Rendering wigging out

Does anyone know why this is happening...It was rendering just fine, then I did a few modeling tweeks and decreased intensity of some omni lights and this is what I got. I've seen this on a few other models and usually go back to some previous options setup to fix it. But I'd like to know what specifically is happening so I can fix it.

Any help?

Thanks!

[graditec]

Re: Rendering wigging out

Try closing the file and open it again. or/and reload visopts.

[dalomar_cg]

Re: Rendering wigging out

Another guess...coplanar faces