Only in feedbuttons: feedbuttons.info~
diff -urp feedbuttons/feedbuttons.module feedbuttons6/feedbuttons.module
--- feedbuttons/feedbuttons.module	2007-10-06 19:54:09.000000000 -0400
+++ feedbuttons6/feedbuttons.module	2008-04-21 16:25:08.000000000 -0400
@@ -40,8 +40,8 @@ function feedbuttons_block($op='list', $
   }
 
 //    $blogname = variable_get('feedbuttons_blog_title', variable_get('site_name', 'drupal'));
-//    $blogurl = variable_get('feedbuttons_blog_url', url('blog', NULL, NULL, TRUE));
-    $feedurl = variable_get('feedbuttons_feed_url', url('node/feed', NULL, NULL, TRUE));
+//    $blogurl = variable_get('feedbuttons_blog_url', url('blog', array('absolute' => TRUE)));
+    $feedurl = variable_get('feedbuttons_feed_url', url('node/feed', array('absolute' => TRUE)));
     if ($buttons = variable_get('feedbuttons_show_items', '')) {
       foreach ($buttons as $button) {
         if ($button === 'feediconlg') { $block_content .= '<a href="'. $feedurl .'"><img src="'.$base_url.'/'. drupal_get_path('module', 'feedbuttons') .'/buttons/feed-icon32x32.png" alt="Feed Icon" /></a><br />'; }
@@ -107,13 +107,13 @@ function feedbuttons_settings() {
 
 //  $form['feedbuttons_blog_url'] = array(
 //    '#type' => 'textfield', '#title' => t('Blog URL'), '#size' => 40, '#maxlength' => 255,
-//    '#default_value' => variable_get('feedbuttons_blog_url', url('blog',NULL,NULL,TRUE)),
+//    '#default_value' => variable_get('feedbuttons_blog_url', url('blog', array('absolute' => TRUE))),
 //    '#description' => t('The URL of your blog (not the feed URL)')
 //  );
 
   $form['feedbuttons_feed_url'] = array(
     '#type' => 'textfield', '#title' => t('Feed URL'), '#size' => 40, '#maxlength' => 255,
-    '#default_value' => variable_get('feedbuttons_feed_url', url('node/feed', NULL, NULL, TRUE)),
+    '#default_value' => variable_get('feedbuttons_feed_url', url('node/feed', array('absolute' => TRUE))),
     '#description' => t('The URL of your feed')
   );
 
@@ -154,16 +154,13 @@ function feedbuttons_settings() {
   return system_settings_form($form);
 }
 
-function feedbuttons_menu($may_cache) {
-  $items = array();
-  if (!$may_cache) {
-    $items[] = array(
-      'path' => 'admin/settings/feedbuttons',
-      'title' => t('Feed Buttons settings'),
-      'access' => user_access('administer feedbuttons'),
-      'callback' => 'drupal_get_form',
-      'callback arguments' => array('feedbuttons_settings'),
+function feedbuttons_menu() {
+    $items['admin/settings/feedbuttons'] = array(
+      'title' => 'Feed Buttons settings',
+      'access arguments' => array('administer feedbuttons'),
+      'page callback' => 'drupal_get_form',
+      'page arguments' => array('feedbuttons_settings'),
+      'description' => t('Feed button settings.'),
     );
-  }
   return $items;
 }
\ No newline at end of file
Only in feedbuttons6: feedbuttons.module~