I've heard it several times from different people now, and I've just talked to Mr. Pirner from Hetzner myself: due to security reasons Hetzner ( www.hetzner.de
) will stop support for high-availability solutions (heartbeat/keepalived etc.) in the next weeks or months. If you have a subnet with multiple IP addresses, they will bind the IP addresses to a server so that it will not be possible to have a virtual or shared IP address (as shown in my HA tutorials, e.g. http://www.howtoforge.com/high-avail...at-debian-etch
They will send out an email to all their customers in the next days, and then it will take a few weeks or months until they make the switch. Until now, they don't offer an alternative solution for people that need HA (such as HowtoForge - HowtoForge runs on an HA cluster at Hetzner), but they told me that if enough people ask for such a solution they might come up with something.
So I'm asking everyone who currently has a HA setup at Hetzner or is interested in doing it to post here. If we are enough, hopefully we can urge Hetzner to change their minds.