Well, "Angry" is probably not a word that fits when referring to the Sun, but, these are some pretty big happenings!
I do wonder if Comet ISON's distant approaching could have any input to the Sun's "getting excited" (rather than "angry")?? :)
http://www.foxnews.com/science/2013/10/25/sun-erupts-with-major-solar-flare-video/
http://www.youtube.com/watch?v=EIBDBZLVXuE