title: How to reinstall vim?
body: <p>I have problems with my vim in Ubuntu 11.10, when I press 'i' or 'v' vim doesn't show anything like 'INSERT MODE' or 'VISUAL MODE', when I try to delete with backspace, vim only move the cursor to the left. I tried reinstalling with this <a href="https://stackoverflow.com/questions/8234099/reinstalling-vim">Reinstalling Vim</a> but got the same result, also I don't have ~/.vim directory.</p>
  
  <p>It works fine whith <strong>:set nocp</strong>, why ?</p>