Yes, I'm in an environment with artificial lighting, but it's usually fluorescent. Playing with the adjustment settings can fix the yellow tint, but I would have to do this in each application. It seems that most applications also adjust the settings dynamically while in use; by putting my hand very close in front of the webcam, most programs (ekiga, for instance) fix the yellow tint automajically. I'm in a room with beige walls so perhaps this has something to do with it as well.