I was working on a commercial project yesterday in SPLAT...2 60 second spots and 2 30 second spots.  After getting them finished I, as per usual, exported them out to a folder on the desktop.  Before sending them off to the client I listened through to each of them.  Oddly, they all had a "fade in" at the beginning that was quite pronounced.  I deleted them and opened SPLAT back up and checked every track and found no fades of any kind.  Exported them again...but the fade ins were there again.  This told me that the fade in must be on the master buss.  So I checked all the plugins and the buss and no fade to be found.  Finally solved the problem by moving all tracks to start about 3 seconds late.  Exported and fades gone.  Then I had to trim up the beginnings in Sound Forge.  Tedious and worrisome.  
 
Anybody have an idea what I might have done to cause this "fade in" weirdness??

The new limiter had that bug but was supposedly fixed in the latest CCC Engineering Suite update.

Did they originally start right at the beginning, or did you have a blank measure? I've seen enough weirdness starting a project at 1:01:0000 that I just don't do it anymore.
 
Dan
 

Bet it was the Adaptive Limiter like Bapsi suggested.  I was using it on the master buss on that project.  Will update post haste.
 
and
@Dan...yup all my radio spots start right at the beginning...easier to read total time that way.
 

yorolpal
Will update post haste.

I see what you did there.