> 
>   If you can, try with another computer which is as identical as yours as
> possible (at least with the same Linux version and an Athlon processor).
> If it renders ok, then it's a very clear sign of some kind of hardware
> failure (there can be a very remote possibility that you have some corrupted
> software, eg a driver or similar, but I think it's very improbable).

  Well, I've done this finally, but following the hard way... in some
days the CPU finally died, and now that I've it replaced in warranty, I
can confirm the "Ick" was caused by a "fried" processor (AMD eurotechies
said it was strange, but possible). The new one renders perfectly, and
the render times are the expected for such a system (looking at
povbench).

  Thanks to all for the suggestions and ideas... bye!

-- 
Jaime Vives Piqueres

La Persistencia de la Ignorancia
http://www.ignorancia.org/

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