Index: wp-includes/user.php
===================================================================
--- wp-includes/user.php	(revision 37690)
+++ wp-includes/user.php	(working copy)
@@ -139,7 +139,7 @@
 		return new WP_Error( 'invalid_username',
 			__( '<strong>ERROR</strong>: Invalid username.' ) .
 			' <a href="' . wp_lostpassword_url() . '">' .
-			__( 'Lost your password?' ) .
+			__( 'Reset Password' ) .
 			'</a>'
 		);
 	}
@@ -165,7 +165,7 @@
 				'<strong>' . $username . '</strong>'
 			) .
 			' <a href="' . wp_lostpassword_url() . '">' .
-			__( 'Lost your password?' ) .
+			__( 'Reset Password' ) .
 			'</a>'
 		);
 	}
Index: wp-login.php
===================================================================
--- wp-login.php	(revision 37690)
+++ wp-login.php	(working copy)
@@ -748,7 +748,7 @@
 
 <p id="nav">
 <a href="<?php echo esc_url( wp_login_url() ); ?>"><?php _e( 'Log in' ); ?></a> |
-<a href="<?php echo esc_url( wp_lostpassword_url() ); ?>"><?php _e( 'Lost your password?' ); ?></a>
+<a href="<?php echo esc_url( wp_lostpassword_url() ); ?>"><?php _e( 'Reset Password' ); ?></a>
 </p>
 
 <?php
@@ -940,7 +940,7 @@
 		echo apply_filters( 'register', $registration_url ) . ' | ';
 	endif;
 	?>
-	<a href="<?php echo esc_url( wp_lostpassword_url() ); ?>"><?php _e( 'Lost your password?' ); ?></a>
+	<a href="<?php echo esc_url( wp_lostpassword_url() ); ?>"><?php _e( 'Reset Password' ); ?></a>
 <?php endif; ?>
 </p>
 <?php } ?>