They were printing out the old-style heavy stock boarding passes and hand-carrying them out. Boarding was done with a printout and a sharpie. I'm told the system went back to normal a few hours later, but plenty of people missed their flights, despite the planes being held for almost an hour in some cases.

Surprisingly enough, despite leaving almost an hour past scheduled time, we landed in CLE only about 40mins late. Didn't dilly-dally on the ground much once we left the gate, and the crew did a pretty good job whipping (err... motivating) those hamsters in their wheels under the wings.