I knew that info already. I wanted something more deep, but thanks, anyway.
The lighting will be changed, but still you can expect to see things like that in the map, as i probably won't be able to fix them all.
It is at least better than
this (already fixed): the warmer spot is from sunlight. The rest of the spots are from sunlight2 that multiplied itself on its own accord.
Those harsh shadows you point out are the result of trying to fake GI in rooms with lots of architectural elements and exits, and i have several rooms that are like that one.
* FifthElephant, i tested it again right now to be sure, checking the extra option works and gives a 2x2 sampling, but any compiling-related commands are ignored, so when i put extra4, it still compiles with normal extra (2x2).