I recall a discussion sometime last year about a bug in the random number
generator
that resulted in 'flat' areas in the bozo and spotted patterns.

I've just run across and example and my question is: Is there a
workaround/solution for this. I'm working on a scene where I need most of
the objects covered with soot and the flat areas really look bad. The
texture I'm working with is :

 pigment {
  spotted
  color_map {
   [0.0 rgbt<0.2,0.2,0.2,0.2>]
   [0.8 rgbt<0.3,0.3,0.3,0.4>]
   [0.85 rgbt<0.4,0.4,0.4,0.5>]
   [1.0 rgbt<0.5,0.5,0.5,0.6>]
  }
  turbulence 0.4
  translate x*5
  scale 0.1
 }

Thanks for any help

Gail
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