Index: system/system.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.module,v
retrieving revision 1.418
diff -u -p -r1.418 system.module
--- system/system.module	5 Dec 2006 05:47:37 -0000	1.418
+++ system/system.module	7 Dec 2006 16:06:03 -0000
@@ -1508,7 +1508,7 @@ function theme_system_modules($form) {
   // Pull package information from module list and start grouping modules.
   $modules = $form['validation_modules']['#value'];
   foreach ($modules as $module) {
-    if (!isset($module->info['package'])) {
+    if (!isset($module->info['package']) || !$module->info['package']) {
       $module->info['package'] = 'Other';
     }
     $packages[$module->info['package']][$module->name] = $module->info;