We had Shawn & Mandy over last night and were talking MINI (shocking, isn't it?). I popped open the bonnet and look what I found:

The top mount on the coolant tank is broken off, and there is coolant all over the engine and heat shield. The worst part is that you can see a gray material on there - it looks like it was glued back together.
Cheryl had taken it in while I was on my three-month 'business' trip, so I looked on the service history on the CF website. Check out line 6:
1 MA15 C (Tech 140)
2 0054822 W LUBRICATING G RAILS ON SLIDE/TILT SUNROOF (Tech 140)
3 0 I INFORMATION NOTED/COMPLETED (Tech 140)
4 0055107 W REPLACING CRANKCASE VENTILATION LINE (Tech 140)
5 3112630 W REPLACING RUBBER MOUNTS IN LEFT OR RIGHTCONTROL ARM (Tech 140)
6 1711550 W REMOVING AND INSTALLING OR REPLACING COOLANT EXPANSION TANK (Tech 140) 7 0 I INFORMATION NOTED/COMPLETED (Tech 140)
Waiting for call back from CF...