Thanks for your answers.
But I tried to describe something different:
Just as an example (the numbers are not exact):
My AI has 30000 kt organics in stock, its net resources per turn are -4000 kt organics.
During this turn another planet is colonized. It has a mineral value of 140%. Normally a mining colony should have been founded according to my settings in the AI planet_types file.
However what I get is a farming colony on this planet with its organic value of 80%.
That is not an isolated case, I've seen this several times. If the AI "thinks" it will be going bancrupt because of lacking radioactives there is a good chance the next colonized planet will become a refining colony regardless of its value.
It is mentioned in
http://www.shrapnelgames.com/cgi-bin...;f=23;t=001756
and I would like to know about its details.