A little additional info for anyone interested...
I am currently running the Dunlop Sportmax Qualifiers (120 front, 180 rear). According to some folks I've spoken to, these perform
very poorly in cold weather...I can attest to that. Of course, it probably doesn't help that I ran these tires at Elkhart Lake in '06 at the Reg Predmore CLASS school (my 3rd time...highly recommended).
As an aside...it was raining on one of the track days, and the Qualifier (rear) did break loose on a corner (I saved it). All things considered, my experience with them has been pretty sketchy. They're probably fine for running hot & dry, but then those are ideal conditions for any tire.
Live and learn...I'm probably going to put on a set of
Michelin Road Pilot 2's this year. They are said to warm very quickly (for short rides in town, etc...), and have widely favorable feedback.