real fog, believe it or not, makes the junk look faded in the background! [Wink]
Exactly what do you want when you say real thick fog?
I always thought gameStudio's fog was pretty realistic.

as for level leaking warning, search for objects outside the level, or putting a sky box around your level. If you already have a sky box, make sure it has no cracks in it or the like.

Every day I get up and look through the Forbes list of the richest people in America. If I'm not there, I go to work. What the world needs is more geniuses with humility, there are so few of us left.