I need your expert comments :-)

This is the first serious render of the scene with radiosity. It is a 2-pass 
job (first gathering radiosity data on an image half the size of this one; 
took about 5+ hours; second pass was just about 45 minutes). There are still 
ugly artifacts visible, especially on the columns. What is the best way to 
go from here? I include the radiosity settings used so far. Normal and media 
are off; Megapov settings were used

Thanks for the help!!

Thomas

//==== start code ====
      radiosity {
        //saving radiosity data:
        #if (RadSave)
          save_file "Oreille2.rad"
          pretrace_start 0.01
          pretrace_end   0.005
          nearest_count 6
          always_sample on
          #if (MPov)
            samples 1
            adaptive 2
            error_bound {0.1 adaptive 1.5, 50}
          #else
            error_bound 0.1
          #end

        //reading radiosity data:
        #else
          load_file "Oreille2.rad"
          pretrace_start 1
          pretrace_end 1
          nearest_count 6
          always_sample off
          #if (MPov)
             samples 1
             adaptive 1
             error_bound {0.1 adaptive 1.8, 20}
          #else
             error_bound 0.1
          #end
        #end

        //common settings:
        low_error_factor 0.5
        gray_threshold 0
        adc_bailout 0.01/2
        minimum_reuse 0.015
        count 150
        brightness 1.0
        recursion_limit 3
        normal Nor
        media Med

      }
//==== end code ====

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