Why is Twitter displaying The Authorization Window everytime i try to update status?

Question

Hi guys i am using the twitter Connect API mentioned in this tutorial But its not working as described there.

The problem that i am facing is that the authorization windows keeps popping up. The first time it asks for credentials but after that it just opens up a window and when i click authorize it updates my twitter status. SO i was wondering, that can i bypass the annoying Twitter authorize popup that is occurring every time i want to update my twitter status.

I am using this code to check whether twitter is authenticated or not but it always return false

if (mTwitter.isAuthenticated()) {
            PostStatus();
        } else {
            mTwitter.authenticate();
        }