A permanent fix is to edit the files; includes/init.php, includes/class_core.php, etc. and on the line the problem is (i.e. on line 55 and 107) there should be something like:
$variable =& new Class();
Just remove the &
Another good fix is to use this error reporting when you run into init.php errors, add: error_reporting(E_ALL & ~E_NOTICE ^ E_DEPRECATED);