Right on schedule I received an email from United Airlines regarding my flight to Australia 65 days from now (not that I'm counting!). The email advised me that my flight time had been changed. From 6:42 PM to 6:44 PM.
I'm pretty sure they sent a similar email about a year ago to Heino to advise him that his flight time had also been shifted a miniscule amount. I certainly remember, the last time I was counting down the days to a trip back to Australia, receiving email from United with much the same advice; a two or three minute schedule change.
Hmmm. Maybe I err on the side of caution when flying, for I'm always at the airport at least an hour ahead of time, but it seems to me that if you're cutting it so fine that a two minute difference in flight time might mean the difference between catching or missing a flight then you need to readjust your expectations.