Index: wp-includes/admin-bar.php
===================================================================
--- wp-includes/admin-bar.php	(revision 19497)
+++ wp-includes/admin-bar.php	(working copy)
@@ -586,8 +586,7 @@
  */
 function wp_admin_bar_search_menu( $wp_admin_bar ) {
 	$form  = '<form action="' . esc_url( home_url( '/' ) ) . '" method="get" id="adminbarsearch">';
-	$form .= '<input class="adminbar-input" name="s" id="adminbar-search" tabindex="10" ';
-	$form .= 'type="text" value="" maxlength="150" placeholder="' . esc_attr__( 'Search' ) . '" />';
+	$form .= '<input class="adminbar-input" name="s" id="adminbar-search" tabindex="10" type="text" value="" maxlength="150" />';
 	$form .= '<input type="submit" class="adminbar-button" value="' . __('Search') . '"/>';
 	$form .= '</form>';
 
Index: wp-includes/css/admin-bar.dev.css
===================================================================
--- wp-includes/css/admin-bar.dev.css	(revision 19497)
+++ wp-includes/css/admin-bar.dev.css	(working copy)
@@ -405,7 +405,7 @@
 #wpadminbar #adminbarsearch .adminbar-input {
 	font: 13px/24px sans-serif;
 	height: 24px;
-	width: 140px;
+	width: 24px;
 	border: none;
 	padding: 0 3px 0 23px;
 	margin: 0;