OK, you can close this ticket. The problem was that I had "auto" instead of "auto=true" in the boot command. That has worked in previous releases...
- Bug#950830: #950830 installation-reports: Preseeding langua... Holger Wansing
- Bug#950830: #950830 installation-reports: Preseeding l... john doe
- Bug#950830: #950830 installation-reports: Preseedi... Marko, Peter
- Bug#950830: #950830 installation-reports: Pres... Holger Wansing
- Bug#950830: #950830 installation-reports: ... Marko, Peter
- Bug#950830: #950830 installation-repo... Marko, Peter