Here is a new render with the 'conserve_energy' put into the glass material,
much better (I hadn't noticed it missing earlier).  Some of the other
quality settings have been changed.

Render Time: 1h 35m 26s  (P4 1GHz 256RAM WIN2000)
Parse Time: 1s
# photons shot: 28400
# surface photons stored: 26816

global_settings {
  adc_bailout 0.00001
  ambient_light 1
  assumed_gamma 1.8
  max_trace_level 25
    radiosity{
      pretrace_start 0.08
      pretrace_end 0.04
      count 100
      recursion_limit 5
      nearest_count 10
      error_bound 1.8
      low_error_factor .5
      minimum_reuse 0.0001
      brightness 1
    }
    photons{
     spacing 0.0033
     radius 10
      autostop 0
      gather 200,1000
      max_trace_level 5
    }
}


20x20 array of spotlights used

glass and metal objects have a target value of  400 (20*20)

I am surprised to get such smooth photon results with such a large target
spacing factor and such a low parse time.  Any clue as to why this is so?

-tgq

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