The Deutsche Bahn has still much to learn. The french company already as WiFi and it works very well, even at 300km/h. The only thing that does not work is IMAPS to my server. That is really sad I should think about some tunnel on a public port to get it working....

EDIT: Can also be an ubuntu issue: My KMail looks a bit broken since yesterday, I lost two accounts and TLS for SMTP isn't working, too.