title: Why am I getting 404 page not found errors in Drupal 7?
body: <p>On updating a person's details or a piece of content, like a blog entry, sometimes, although seemingly not all the time, my Drupal 7 website trys to open the following clean urls:</p>
  
  <p>/admin/people<br>
  or<br>
  /admin/content</p>
  
  <p>rather than</p>
  
  <p>?q=admin/people<br>
  or<br>
  ?q=admin/content</p>
  
  <p>and I get a 404 page not found error.</p>
  
  <p>I have the standard unchanged .htaccess file that comes out of the box.</p>
  
  <p>I have not tried to enable clean urls.</p>
  
  <p>I have added some very standard modules: Insert, Computed Field and CKEditor. That's all.</p>
  
  <p>If it matters, my hosting service is 1&amp;1.</p>
  
  <p>Why am I getting theses 404s? Thanks.</p>