Change your php.ini to use memcache for session storage:
[Session] ; Handler used to store/retrieve data. session.save_handler = memcache ; Argument passed to save_handler. In the case of files, this is the path ; where data files are stored. Note: Windows users have to change this ; variable in order to use PHP's session functions. session.save_path = "tcp://127.0.0.1:11211"Restart your apache or cgid and you're done.
