Sorry, I'm with JNS on this one. More than once I've been late for a connection on a FF ticket, hustled to the gate only to find out the flight is closed, and then watched it sit there for another 15 minutes while they load bags! Unotinental has done that to me at least twice.
Too many agents are only interested in filling squares, not doing what is right for customer service. I can't completely blame them, that comes from above. Doesn't make it any less frustrating.