Well, I booked myself on UA931 LHR-SFO 3 weeks ago. Chose the flight over the other one that leaves a few hours earlier because it was new config. Got 2K, my favorite. Then 2 days ago, I see it changed to old. I re-selected to 3J, my favorite of the old config. Show up today at LHR, and it is new config again. Got my trusty old 2K seat. Yeah! Then, 20 minutes ago, they started calling people up because the old config was back again.

Give me a break!