I happened to me and others users I know, he has passed the torch particles deviate by a few milliseconds, will be better understood in the video.

Check out this video from the second 22, concentration into the flames of the torch and the particles will deviate, is in Spanish, but that's not the case.

http://www.youtube.com/watch?v=JVfYtbehNQ4&feature=g-user-u