How to revert vlc media player to its original state?

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http://askubuntu.com – For the last few days, my vlc player is not responding at all, when i try to double click any file or even run vlc without any file, it just doesn't open up. I tried to open it through terminal and it was working fine but there were no option coming on vlc screen and also if i close the terminal, vlc closes automatically. I can't figure how to make vlc back to its original way so that i can access any file through vlc. Any help will be appreciated.. (HowTos)