title: Magento page is very slow
body: <p>I have a Magento shop: www.ihnkenrollen.de</p>
  
  <p>The page itself loads quite fast but as soon as i click on a category on the left, it takes 6-10 seconds to load. Someone told me that the shop uses no index what makes the shop really slow. How can I add an index to my shop? What else could be wrong?</p>
  
  <p>Thanks in advance!</p>