Sounds like the official maintainer is still PALANT, ...
in reply to Re: Why isn't a newer version of a module installable from cpan?
in thread Why isn't a newer version of a module installable from cpan?
Actually, no that doesn't sound like the problem :)
If you go to http://search.cpan.org/dist/Syntax-Highlight-Universal/ it shows http://search.cpan.org/~mishoo/Syntax-Highlight-Universal-0.5/ as the latest official release.
This means its a bug with 02packages.details.txt.gz/modlist, which happens from time to time