Multiple vocabulary blocks for 5.x

If you need block containing tags from multiple vocabularies, you can create a custom php block with the following code:

All or almost all vocabularies version:

if (module_exists("tagadelic")) {
  $output = "";
  $tag_levels = 3; //max 10
  $tag_count = 20; //unlimited, but think about the size of the rendered block......
  $vocs = array();
  foreach (taxonomy_get_vocabularies() as $voc) {
    /* uncomment this section to exclude vocabularies: 1, 2, 3 and 4. Replace this list to your needs.
    if (in_array($voc->vid, array(1,2,3,4))) {
      continue;
    }
    */
    $vocs[] = $voc->vid;
  }
  if (!empty($vocs)) {
    $tags = tagadelic_get_weighted_tags($vocs, $tag_levels, $tag_count);
    $tags = tagadelic_sort_tags($tags);
    $output = theme('tagadelic_weighted',$tags);
  }
  print $output;    
}

Only a few vocabulary version:

if (module_exists("tagadelic")) {
  $output = "";
  $tag_levels = 3; //max 10
  $tag_count = 20; //unlimited, but think about the size of the rendered block......
  $vocs = array();
  $voc_ids = array(1, 2, 3); //include tags from vocabularies: 1, 2 and 3. Replace this list to your needs.
  foreach ($voc_ids as $voc_id) {
    if ($voc = taxonomy_vocabulary_load($delta)) {
      $vocs[] = $voc->vid;
    }
  }
  if (!empty($vocs)) {
    $tags = tagadelic_get_weighted_tags($vocs, $tag_levels, $tag_count);
    $tags = tagadelic_sort_tags($tags);
    $output = theme('tagadelic_weighted',$tags);
  }
  print $output;    
}