--- modules/system/system.module	2008-08-14 01:59:09.000000000 +0200
+++ modules/system/system.module	2008-08-28 14:59:48.000000000 +0200
@@ -1429,6 +1429,22 @@
   }
 }
 
+function system_module_get_module_recursive_dependencies($modules, $name)
+{
+  $dependencies = array();
+  if(isset($modules[$name])) {
+    $module = $modules[$name];
+    if(!$module->status && isset($module->info['dependencies']) && is_array($module->info['dependencies'])) {
+      foreach($module->info['dependencies'] as $dependency) {
+        $dependencies[] = $dependency;
+        $dependencies = array_merge($dependencies,
+                          system_module_get_module_recursive_dependencies($modules, $dependency));
+      }
+    }
+  }
+  return $dependencies;
+}
+
 function system_module_build_dependencies($modules, $form_values) {
   static $dependencies;
 
@@ -1443,6 +1459,9 @@
               $dependencies[$name] = array();
             }
             $dependencies[$name][] = $dependency;
+            $dependencies[$name] = array_unique(
+                                     array_merge($dependencies[$name],
+                                        system_module_get_module_recursive_dependencies($modules, $name)));
           }
         }
       }