Index: plugin.php
===================================================================
--- plugin.php	(revision 20974)
+++ plugin.php	(working copy)
@@ -118,9 +118,9 @@
 	if ( $translate ) {
 		if ( $textdomain = $plugin_data['TextDomain'] ) {
 			if ( $plugin_data['DomainPath'] )
-				load_plugin_textdomain( $textdomain, false, dirname( $plugin_file ) . $plugin_data['DomainPath'] );
+				load_plugin_textdomain( $textdomain, false, basename(dirname( $plugin_file )) . $plugin_data['DomainPath'] );
 			else
-				load_plugin_textdomain( $textdomain, false, dirname( $plugin_file ) );
+				load_plugin_textdomain( $textdomain, false, basename(dirname( $plugin_file )) );
 		} elseif ( in_array( basename( $plugin_file ), array( 'hello.php', 'akismet.php' ) ) ) {
 			$textdomain = 'default';
 		}