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When I use the validator to validate <https://static.sourceforge.net/css/sfx.php?secure=1&20061201-0758>, that page is successfully retrieved, inspected and a result (not valid) is returned. However, when I try to validate <https://addons.mozilla.org/css/thickbox.css>, the validator responds with this error: ============ Target: https://addons.mozilla.org/css/thickbox.css I/O Error: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target ============ addons.mozilla.org seems to be using standard encryption (RC4 128bit), so I'm guessing the validator doesn't have the right root certificate installed.
Created attachment 539 [details] test test
Works for me now - the new version seems to have fixed the problem.