Can't agree with that advice. It's an interesting problem that others with the same risk should be aware of, regardless of which forums they have time to read. Or not.

Btw I do hope the OP follows up and posts the resolution. I have a bad habit of assuming when an airline agent tells me a flight is confirmed, to assume it is so and not worry about it until I arrive at the airport and thus myself am a prime candidate for such a problem.