Apparently MSP has consolidated security into a north and a south checkpoint. Apparently the south checkpoint is all Delta (SkyPriority, Pre, etc), and the north check point is everybody including Delta economy. Reports on the Delta board are that at times there are lines for both checkpoints stretching at least halfway down the check in area, if not all the way to the other checkpoint.
http://www.flyertalk.com/forum/delta...2-16-16-a.html