It appears that version 0.75 of RPC::XML introduces the stricter method name validation that Evergreen now effectively requires. Consequently, it looks we have:
Ubuntu 12.04 LTS: use librpc-xml-perl (i.e., 0.76)
Debian Wheezy: use librpc-xml-perl (i.e., 0.76)
Debian Squeeze: install from CPAN
Fedora: use perl-RPC-XML
It appears that version 0.75 of RPC::XML introduces the stricter method name validation that Evergreen now effectively requires. Consequently, it looks we have:
Ubuntu 12.04 LTS: use librpc-xml-perl (i.e., 0.76)
Debian Wheezy: use librpc-xml-perl (i.e., 0.76)
Debian Squeeze: install from CPAN
Fedora: use perl-RPC-XML