One thing you can try is raising the low_error_factor to 0.8 or .9.  For
some reason the smoothing doesn't seem to work as well when it's lower.
Either that or the samples aren't evenly dispersed at the lower setting.
To be honest I'm not sure why it is, but the blocky patterns are
definitely an artifact of the mosaic preview.

Also try raising the distance_maximum and reduce minimum_reuse. 

-Mike


> Radiosity settings :
>     count 800
>     error_bound 0.2
>     gray_threshold 0.4
>     distance_maximum 0.4
>     low_error_factor 0.6
>     nearest_count 9
>     minimum_reuse 0.006
>     brightness 3.3
>     recursion_limit 2
> 
> The "light" is background{color White*10}
> The box size is approximately 20 pov units wide.
> Rendering time at 800x600, no aa, was 7 hours on a Pentium Pro 200, NT.
> 
>   ------------------------------------------------------------------------
>  [Image]

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