Facebook C# SDK logout behaviour

I'm using Facebook C# SDK on my Silverlight ap开发者_如何学Cplication. For my Facebook login behaviour I used the sample from officiall documentation.(the one which uses Javascript -> CSSilverlightInBrowser), and it's working very well.

Now, I'm trying to implement the Facebook logout behaviour using code from here but I can't make it working.From the comments on the article it seems like there is some bug on facebook site.

I can't understand why the logout should be on http://m.facebook.com. Is there any way to make the logout working?

Thank you.