...and bought a road bike... Oh the shame of it all.
In all seriousness, commuting on the roadie is much better than on the mtb, but flatting every ride or so is a real PITA. Brakes on the roadie aren't much chop after a diet of discs for years. Rim brakes? Caliper rim brakes? Yikes!
More at http://www.users.on.net/~fathers/roadie.htm