Mine reset today as well, i just got on now, and few minutes later i got on and it said "you have played 0 hours and 3 minuts as of creating this character x days ago " O.o
ok so its not just me. that is no real big deal but i was bummed because i wanted to see how many hours total i have played this game between my three characters.
I know i have 200+ on my necro, 100+ on my Monk, and about 4 hours on my new warrior.