Index: /trunk/wp-admin/upgrade-functions.php
===================================================================
--- /trunk/wp-admin/upgrade-functions.php	(revision 854)
+++ /trunk/wp-admin/upgrade-functions.php	(revision 855)
@@ -682,14 +682,14 @@
 
 	// Convert passwords to MD5 and update table appropiately
-	$query = 'DESCRIBE wp_users user_pass';
+	$query = 'DESCRIBE '.$tableusers.' user_pass';
 	$res = $wpdb->get_results($query);
 	if ($res[0]['Type'] != 'varchar(32)') {
-		$wpdb->query('ALTER TABLE wp_users MODIFY user_pass varchar(64) not null');
-	}
-	
-	$query = 'SELECT ID, user_pass from wp_users';
+		$wpdb->query('ALTER TABLE '.$tableusers.' MODIFY user_pass varchar(64) not null');
+	}
+	
+	$query = 'SELECT ID, user_pass from '.$tableusers;
 	foreach ($wpdb->get_results($query) as $row) {
 		if (!preg_match('/^[A-Fa-f0-9]{32}$/', $row->user_pass)) {
-			   $wpdb->query('UPDATE wp_users SET user_pass = MD5(\''.$row->user_pass.'\') WHERE ID = \''.$row->ID.'\'');
+			   $wpdb->query('UPDATE '.$tableusers.' SET user_pass = MD5(\''.$row->user_pass.'\') WHERE ID = \''.$row->ID.'\'');
 		}
 	}