How cold was it the day before? I haven't had a whole lot of experience with diesels; I had a 2004 6.6 Duramax for 2 years, but I learned a lot from the guys I work with. Whenever it's cold out, diesels need to run a little while to warm up and get to operating good.
Also, if it was really cold the day before or so, and you haven't been running fuel additive/ anti-gel, the fuel could have possibly gelled slightly. Since you did say it stalled on you. I don't know your experience with diesels so if I'm restating things you know, sorry. But diesel fuel will go from liquid to gel in cold temperatures. Most places in the Northern US and Canada usually add some additive/ anti-gel to their fuel, but I don't know that it is all that much. I always ran either Power Services Diesel Kleen in the summer or their Artic Formula in the winter, or Howe's Diesel Treat all year round. Both are great products. Both products help to lubricate the fuel as diesel is dry anymore since they have taken the sulfur out of it. Helps parts move better in the engine.
Anyhow, if is very cold, you might start getting some anti-gel and running it in each tank of fuel. If it does gel, it will stall or run awful or just not start until you thaw out the fuel. Don't know if this is your issue or not though.