44K miles, bought it certified used in Aug '08 with 37K miles. Came out from work yesterdayand car wouldn't start. Jumped it no problem and drove it 10min home.Let it idle in the driveway with all accessories off at home and it died. Jumped it again and had it idle at 2000RPM and it died again in about 15min. The belt is visibly spinning the alternator properly, but I did not put a meter on anything. Live inMA, so cold could be a factor. Most likely problem and/or suggestion?