As I understand you are trying last "stable" release of HTTP::WebTest. It's tests rely on avilability of external web sites so they can fail if there any networking problem. Probably there is no actually any problems. Anyway you may try latest "development" version (avialable from http://www.cpan.org/authors/id/I/IL/ILYAM/HTTP-WebTest-1.99_06.tar.gz) . It is going to become new "official stable" release very soon so don't be scared trying "beta".

Moreover my example will work only with latest "development" version becauses it uses new API.

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Ilya Martynov (http://martynov.org/)