I recently had a very aggrivating problem with this rule. In may I flew from Denver to Vegas for a wedding. I booked my tickets a few months in advance, before TED had taken over the service. I got to the airport with plenty of time to checkin, except the changed my flight time by 20 minutes. So when I went to check in, it was 40 minutes until the new flight left, and I was denied boarding. I was forced to fly standby, and had to wait 7 hours until I was able to squeeze on a flight. The Premier ticket counter, and the gate agents treated me very rudely. Fortunately I found some customer service agents on concourse B at DIA who were sympathetic, but still couldn't do anything. I didn't even have any checkin luggage!
http://www.flyertalk.com/forum/newre...e=1&p=2940883#
Mad