[ubuntu] Facebook and Ubuntu problem

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http://ubuntuforums.org – Hello everyone :-) Just yesterday I got a message from Ubuntu, asking me permission to post on my behalf on Facebook. I have been asked before but I never allowed that. For some reason I decided to allow it, to see what it will do. Now every few minutes it opens this page on facebook on my Firefox. https://www.facebook.com/connect/blank.html#_=_ and I get the message that is shown on my attached picture. Can anyone explain why this is happening, and most importantly how do I get rid of this? Thank you all :-) Attached Images Ubuntu Facebook.png (Hardware)