Index: modules/user/user.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/user/user.module,v
retrieving revision 1.1207
diff -u -p -r1.1207 user.module
--- modules/user/user.module	8 Oct 2010 05:28:30 -0000	1.1207
+++ modules/user/user.module	10 Oct 2010 22:08:51 -0000
@@ -1409,7 +1409,7 @@ function template_preprocess_user_pictur
     }
     if (isset($filepath)) {
       $alt = t("@user's picture", array('@user' => format_username($account)));
-      if (module_exists('image') && $style = variable_get('user_picture_style', '')) {
+      if (module_exists('image') && !url_is_external($filepath) && $style = variable_get('user_picture_style', '')) {
         $variables['user_picture'] = theme('image_style', array('style_name' => $style, 'path' => $filepath, 'alt' => $alt, 'title' => $alt));
       }
       else {