Please close this bug, I was mistaken. The issue seems to be related to something else. I have just upgraded again to the latest Kerberos binaries and cannot reproduce the original issue. Could me intermittent hardware fault which coincided with recent package upgrade activity.
- Bug#1025665: Recent Kerberos upgrade breaks DRM and Xorg star... Sam Hartman
- Bug#1025665: Recent Kerberos upgrade breaks DRM and Xorg... Russ Allbery
- Bug#1025665: Recent Kerberos upgrade breaks DRM and Xorg... Sad Clouds