PAUSE has long had an SSL certificate signed with a CAcert key. CAcert's aims are noble, but over the past few years, browsers have become incredibly cranky about SSL certificates from all but a few trusted providers.
As a small treat for the Perl community, Best Practical has just bought a "proper" SSL certificate for https://pause.perl.org. We'd like to thank Andreas König for his tireless work to operate and maintain PAUSE and his help in making this happen.