Comment 25 for bug 24250

ok, as Matt Mossholder wrote in 2007! (#13) the problem is that the network proxy manager from gnome can set, but cannot unset the http_proxy environmental variable. Only manual unset overrides it, and firefox seems to not care?

Interestingly, if you use "reset" in the gnome network proxy manager, it will always return to the state with proxy, not sure why it assumes that to be the default. Please fix this by now! Essential bug that has been around way too long.