Index: wp-includes/script-loader.php
===================================================================
--- wp-includes/script-loader.php	(revision 9204)
+++ wp-includes/script-loader.php	(working copy)
@@ -155,7 +155,7 @@
 			'good' => __('Medium'),
 			'strong' => __('Strong')
 		) );
-		$scripts->add( 'admin-comments', '/wp-admin/js/edit-comments.js', array('wp-lists', 'jquery-ui-resizable', 'quicktags', 'columns', 'settings-box'), '20081014' );
+		$scripts->add( 'admin-comments', '/wp-admin/js/edit-comments.js', array('wp-lists', 'jquery-ui-resizable', 'quicktags', 'columns', 'settings-box'), '20081016' );
 		$scripts->localize( 'admin-comments', 'adminCommentsL10n', array(
 			'pending' => __('%i% pending'), // must look like: "# blah blah"
 			'hotkeys_highlight_first' => isset($_GET['hotkeys_highlight_first']),
@@ -435,4 +435,4 @@
 add_filter( 'print_scripts_array', 'wp_prototype_before_jquery' );
 
 add_action( 'wp_default_styles', 'wp_default_styles' );
-add_filter( 'style_loader_src', 'wp_style_loader_src', 10, 2 );
\ No newline at end of file
+add_filter( 'style_loader_src', 'wp_style_loader_src', 10, 2 );
Index: wp-admin/js/edit-comments.js
===================================================================
--- wp-admin/js/edit-comments.js	(revision 9204)
+++ wp-admin/js/edit-comments.js	(working copy)
@@ -320,7 +320,8 @@
 		};
 		$.table_hotkeys($('table.widefat'),['a', 'u', 's', 'd', 'r', ['e', edit_comment],
 				['shift+a', make_bulk('approve')], ['shift+s', make_bulk('markspam')],
-				['shift+d', make_bulk('delete')], ['shift+x', toggle_all]],
+				['shift+d', make_bulk('delete')], ['shift+x', toggle_all],
+				['shift+u', make_bulk('unapprove')]],
 				{highlight_first: adminCommentsL10n.hotkeys_highlight_first, highlight_last: adminCommentsL10n.hotkeys_highlight_last,
 				prev_page_link_cb: make_hotkeys_redirect('prev'), next_page_link_cb: make_hotkeys_redirect('next')}
 		);