That's what started this thread :D see http://www.usa.canon.com/consumer/controller?act=PgComSmModDisplayAct&keycode=2112&fcategoryid=216&modelid=11924
Totally normal, you are shooting at the sun! Recall notice: http://www.usa.canon.com/consumer/controller?act=PgComSmModDisplayAct&keycode=2112&fcategoryid=216&modelid=11924