xmlprc.php and default handler munges blogger API posts

I've found that posting remotely through the blogger API causes XML tags to be converted into entities. The posts go through, but the titles look like "<title>My Title" and so forth. My fix is to comment out line 233 in includes/xmlrpcs.php. Surrounding code looks like this:

  // decompose incoming XML into request structure

  xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, true);
  xml_set_element_handler($parser, "xmlrpc_se", "xmlrpc_ee");
  xml_set_character_data_handler($parser, "xmlrpc_cd");
  
  //deleting the default handler allows entites to be parsed
  //xml_set_default_handler($parser, "xmlrpc_dh");

I'm dumping the default handler and letting markup through unchanged. It works, but I can't be sure I haven't opened something up for abuse. I haven't found any comments in the forum about this, so perhaps it's something peculiar to my setup. I'm running PHP 5.0.3.

Any comments?