Several major improvements: Memberlist page added (planned since about beta 2), page group support added for non-JS ACL editor (oops!), and attempting to view a page for which you lack read permissions will get you logged.

.mceItemFlash {
	border: 1px dotted #cc0000;
	background-image: url('../images/flash.gif');
	background-position: center;
	background-repeat: no-repeat;
	background-color: #ffffcc;
}