There is an ongoing outage on the primary CPAN mirror. It is possible to work around the issue by using MetaCPAN as a mirror.

# XML::FeedPP::Plugin::DumpJSON Changes

2008/01/05 (0.33)
    * XML::FeedPP::Plugin::DumpJSON module branched out from XML::FeedPP
      http://search.cpan.org/dist/XML-FeedPP-Plugin-DumpJSON/
    * JSON::Syck is only supported at the moment.
      JSON::PP module version 2.0x seems to have problems with utf8 handling.