Mr Mephisto - yes she wrote some of her own stuff
http://www.mtv.com/bands/c/clarkson_...eature/041122/
"I was Little Miss Songbird, writing everywhere with everyone. Some of the songs didn't make it; they were awesome as well, but you can only have so many on an album. I ended up writing like half the album and working with a lot of great writers and producers. And the songs I didn't write, writers that I was working with wrote for me."
although it sounds like she didn't really get the final say in what made the album