title: Javascript files getting corrupted automatically
body: <p>A strange thing happening to my system, 
  My JavaScript files are getting corrupted automatically. like this:</p>
  
  <pre><code>�������������������������������������
  </code></pre>
  
  <p>I have never touched the file which are getting corrupted.</p>
  
  <p>if I replace corrupted file with backup then again any other file get corrupted, This strange thing is happening in my whole localhost. I am sure it is not happaning due to any virus, I have tested my whole localhost files by many antivirus.</p>
  
  <p>Is browser is doing this ?, cause which files are corrupting, they are only accessed by browser.</p>
  
  <p>please help me.</p>