Hi Helge,
I get an error with the blogging bundle. When I type cat->tab, than I get the following:
/usr/lib/ruby/1.8/net/protocol.rb:83:in `initialize': getaddrinfo: No address associated with nodename (SocketError)
This came up a couple of months ago, and Allan and Marc Brogle added in proxy support to the blogging bundle in order to try and get around the problem. See the help file in the blogging bundle for details (environment variable section). If you're behind an *authenticating proxy*, like someone I know all-too-well, you seem to be out of luck for now.
Cheers, Paul