title: Products don't show in catalog -> product management
body: <p>After importing products, they don't show up in catalog. Neither in <code>admin-&gt;catalog-&gt;product mangement</code>, but they <strong>do</strong> show in <code>catalog-&gt;categories management</code> as products of the category.</p>
  
  <p>I've rebuilt indexes and re-created caches... Any idea of what might have gone wrong?</p>
  
  <p>Magento version 1.6.1</p>