I went to an extreme conference last week, but during the trip back and forth to Madison, WI experienced extreme boredom. Have you been to an airport lately?
Did you have to wait in a line? Ticket Counter, Security, Waiting to Board. So what did you do with time? Nothing? Did you just stand there for 8.25 minutes but it felt like 2 hours. You may have been suffering from microboredom.
Of course, there are remedies. For engagement you always have twitter www.twitter.com, your favorite casual game on your cell phone or listening to a podcast. Don't be caught unplugged.