As an extra precaution, I made this my zen_href_link function:

PHP Code:
  function zen_href_link($page='',$parameters='',$connection='NONSSL',$add_session_id=true,$search_engine_safe=true,$static=false,$use_dir_ws_catalog=true){
    if(!
$link=$GLOBALS['SeoUrl']->buildHrefLink($page,$parameters,$connection,$add_session_id,$static,$use_dir_ws_catalog))
      return 
zen_href_link_stock($page,$parameters,$connection,$add_session_id,$search_engine_safe,$static,$use_dir_ws_catalog);
    else 
      return 
$link;
  }