We also waited a little on the ground in Philadelphia and they kept changing our gate, finally got out somewhere in Terminal B and power-walked to the bus connection to the crappy terminal F (US Air regional-type flights). Caught the bus (barely) so didn't have to wait, and of course the gate was closed already for my flight to Albany. Missed by about 2 minutes.
Sat around in the terminal, had a really bad cappuccino and some kind of food (not as bad as the coffee).