After three years of marriage, Avril Lavigne has filed for divorce from husband Deryck Whibley. The pair have been separated for over a month. ... Another one bites the dust. With Deryck having worked quite a bit with Avril on her forthcoming album, I wonder if she'll end up using what they cooked up or not. Either way, with no news lately, something tells me that November 17th date isn't gonna stick.