I did some miniature painting for Blood Bowl and Battletech a few years ago. It took me at least a week for each figure. I was quite pleased until I met a guy who could do a whole Warhammer squad in two nights and they looked so much better than mine.
When you first delve into the world of miniatures painting, it can be *very* time-consuming (taking a week to fully finish a single figure is certainly not unheard of). Of course, the more you become accustom to painting them, the faster you can accomplish the same level of quality -- and the better the quality of your work can reach.
Gotta love it when some 'idiot' comes along though and outdoes you by such a stretch -- a real knockout-punch to one's ego.