[Serious] Are atheists more likely to commit suicide than someone with religious faith?

I've gotten into a small debate with my friends and family. Recently a member of my girlfriends family committed suicide and he was deeply religious. After thinking about my own past, the vast majority of the people I knew who had committed suicide were also very religious. I looked into other sources despite my anecdotal evidence and not surprisingly, found the opposite:

http://www.gallup.com/poll/108625/more-religious-countries-lower-suicide-rates.aspx http://www.adherents.com/misc/religion_suicide.html http://aje.oxfordjournals.org/content/155/5/413.full

I don't agree with how these studies were run, or with some of the conclusions they drew, but it's admittedly hard for me to argue this point. Anyone have any thoughts on the matter?