Index: wp-admin/includes/screen.php
===================================================================
--- wp-admin/includes/screen.php	(revision 19590)
+++ wp-admin/includes/screen.php	(working copy)
@@ -810,7 +810,7 @@
 						}
 						echo '<label for="wp_welcome_panel-hide">';
 						echo '<input type="checkbox" id="wp_welcome_panel-hide"' . checked( (bool) $welcome_checked, true, false )  . ' />';
-						echo __( 'Welcome' ) . "</label>\n";
+						echo _x( 'Welcome', 'Screen Options' ) . "</label>\n";
 					}
 				?>
 				<br class="clear" />
Index: wp-admin/install.php
===================================================================
--- wp-admin/install.php	(revision 19590)
+++ wp-admin/install.php	(working copy)
@@ -167,7 +167,7 @@
 	case 1: // Step 1, direct link.
 	  display_header();
 ?>
-<h1><?php _e( 'Welcome' ); ?></h1>
+<h1><?php _ex( 'Welcome', 'Installation' ); ?></h1>
 <p><?php printf( __( 'Welcome to the famous five minute WordPress installation process! You may want to browse the <a href="%s">ReadMe documentation</a> at your leisure. Otherwise, just fill in the information below and you&#8217;ll be on your way to using the most extendable and powerful personal publishing platform in the world.' ), '../readme.html' ); ?></p>
 
 <h1><?php _e( 'Information needed' ); ?></h1>