Approved by Joomla!

http://extensions.joomla.org/component/option,com_mtree/task,viewlink/link_id,3594/Itemid,35/

You can download User Trace from here

Description 

This extension logs these informations about people connected to your site. The module collects these informations.

• Requested URLs
• IP Address
• Username
• User Agent
• User Referer
• Date
• Time