ola,

we've recently put in a set of methods in the binarycloud 
core classes so they can enforce their singleton status.

An example:

    // {{{ method GetInstance()

    /**
     * This method enforces this class's singleton
     * status. It check s astatic var for an instance,
     * if that instance exists a reference to it
     * is returned. If it does not exist it is created
     * and a reference is returned.
   	 * @author hans lellelid, hans@velum.net
	    * @access public
     */
    function &GetInstance() {
		    static $instance;
	    	if(!isset($instance)) {
	      		$instance = new Request();
	    	}        
      return $instance;
    }

    // }}}

note the line:

$instance = new Request();

that means the instance is always overwritten.

we have to do that because:

$instance =& new Request();

results in a null $instance.

We believe this is a bug, but it's on the edge of possible 
expected behavior.

thanks,

_alex