I see it with my own build of Perl 5.8.8 on Mac OS X, with CPAN 1.9205. Whatever caused this happened since Jan 25th - I think it may be related to an empty /usr/local/lib/perl5/5.8.8/darwin-2level/auto/CPAN folder, or else something to do with a bunch of CPAN::Test::Dummy::Perl5::Make prereqs not found. Hoping for a new CPAN to fix this...