At work I'm behind a firewall that does a standard HTTP authentication on
any access to an external site (to restrict access by "unauthorized
users"). This firewall cuts in both for transparent access as well as
non-transparent access (http_proxy environment var set).
In the case of transparent proxying, GnoRPM dies (segfault) on any attempt
to access the RedHat site (Web find, etc.)
In the case of non-transparent proxying, GnoRPM simply gives no
opportuntity to enter the username and password for the firewall
authentication, and so all web operations fail.