Htc chahca, Facebook page respring problem

Every time I start up my htc It resprings the build-in facebook page of the htc. (the same page you get when you puch the facebook button)
It shows this page without me doing anything and it resprings like every 0,2 secconds wich makes doing things on my phone impossible.
When I push the home button it just shows up in less than one seccond again, sometimes its even that worst than it wont show me the home page becouse it resprings so fast.

Ive tried like literaly everything to fix this problem, tried restarting it, I tried restoring it back to the factory settings. Deleted all my app's. tried shutting it down for a week.
Nothing helped, it just keeps showing that stupid build-in facebook page, wich makes doing anything on my phone impossible (even accepeting call's)
I really hope that you guys can help me out, becouse otherwise I have to contact HTC about this.

Thanks

— modified on Jul 6, 2012, 10:26:10 AM