Apparently this happened with PMCO in the past, and now it's come to COdbaUA (at least on my flight tomorrow where apparently nobody has checked in per the mobile site)

http://www.flyertalk.com/forum/conti...cted-gate.html

Apparently happens when there's "...a computer glitch: the flight had never been released for online check in. The airport staff noticed this and called in the problem." So if you get this message in the future - it's not SSSS, it's not an out of sync ticket, it's, you got it, SHARES.

LGA will be fun tomorrow morning with a 757 full of flyers all having to check in in person.