First freezing morning here, and what do you know - I get a flat. At first I felt slight bounce in the rear as I was riding and thought the tube had gotten softer because of the cold, but no, I wasn't that luckky. I thought it would be enough to use the pump once or twice until I get to work... nope. Every time I used the pump the tube went soft faster, until I think the fourth time when it went totally flat in less than 30 seconds.
It took me almost ten minutes to remove the tire using two levers, that's how bad it was because of the cold (also, Schwalbe Marathon), but once it went off everything went well, I was done in 15 minutes and got to work 10 minutes early (as opposed 35).
I fully expect something nice to happen in return, one of these days, preferably tomorrow.