Index: wp-includes/script-loader.php
===================================================================
--- wp-includes/script-loader.php	(revision 7233)
+++ wp-includes/script-loader.php	(working copy)
@@ -122,7 +122,7 @@
 				'good' => __('Good'),
 				'strong' => __('Strong')
 			) );
-			$this->add( 'admin-comments', '/wp-admin/js/edit-comments.js', array('wp-lists'), '20080304' );
+			$this->add( 'admin-comments', '/wp-admin/js/edit-comments.js', array('wp-lists'), '20080311' );
 			$this->localize( 'admin-comments', 'adminCommentsL10n', array(
 				'pending' => __('%i% pending') // must look like: "# blah blah"
 			) );
Index: wp-admin/js/edit-comments.js
===================================================================
--- wp-admin/js/edit-comments.js	(revision 7233)
+++ wp-admin/js/edit-comments.js	(working copy)
@@ -4,8 +4,11 @@
 var dimAfter = function( r, settings ) {
 	$('li span.comment-count').each( function() {
 		var a = $(this);
-		var n = parseInt(a.html(),10) + ( $('#' + settings.element).is('.' + settings.dimClass) ? 1 : -1 );
+		var n = parseInt(a.html(),10);
+		n = n + ( $('#' + settings.element).is('.' + settings.dimClass) ? 1 : -1 );
+		if ( n < 0 ) { n = 0; }
 		a.html( n.toString() );
+		$('#awaiting-mod')[ 0 == n ? 'addClass' : 'removeClass' ]('count-0');
 	});
 	$('.post-com-count span.comment-count').each( function() {
 		var a = $(this);
@@ -18,6 +21,8 @@
 			n = n + 1;
 			t = t - 1;
 		}
+		if ( n < 0 ) { n = 0; }
+		if ( t < 0 ) { t = 0; }
 		if ( t >= 0 ) { a.parent().attr('title', adminCommentsL10n.pending.replace( /%i%/, t.toString() ) ); }
 		if ( 0 === t ) { a.parents('strong:first').replaceWith( a.parents('strong:first').html() ); }
 		a.html( n.toString() );
@@ -27,14 +32,11 @@
 var delAfter = function( r, settings ) {
 	$('li span.comment-count').each( function() {
 		var a = $(this);
-		if ( parseInt(a.html(),10) < 1 ) { return; }
-		// on ?edit-comments.php?comment_status=moderated tab
-		// or the comment is unapproved
-		if ( a.parent('.current').size() || $('#' + settings.element).is('.unapproved') ) {
-			var n = parseInt(a.html(),10) - 1;
-			a.html( n.toString() );
-			( 0 < n ) ? $('#awaiting-mod').each(function() { $(this).show(); $(this).removeClass('count-0') }) : $('#awaiting-mod').hide();
-		}
+		var n = parseInt(a.html(),10);
+		n = n + ( $('#' + settings.element).is('.unapproved') ? -1 : 1 );
+		if ( n < 0 ) { n = 0; }
+		a.html( n.toString() );
+		$('#awaiting-mod')[ 0 == n ? 'addClass' : 'removeClass' ]('count-0');
 	});
 	$('.post-com-count span.comment-count').each( function() {
 		var a = $(this);