Another data point from last friday:

Fast track (left lane) merged with a regular lane coming in from the right, with families and folks who clearly had never flown beforw That combined lane then shares a single xray machine with the next (regular) lane, and leople continually got put aside and frisked.

So overall pretty slow. The frustrating part is that there was a seperate crew/diplomat lane to the left, completely manned, but not a single pax for the entire 20 minutes it took us to get through their 'fast' track security.