It appears that the bug I'm observing in the 'testing' release has already been reported against tgif (Debian bug #123557) and resolved (in tgif 4.1.40-2 and later, which are still only in 'unstable').
However, in case this diagnosis is of use to you: Package: xlibs Version: 4.1.0-9 Package: tgif Version: 4.1.34-2 > # dpkg --configure xlibs > Setting up xlibs (4.1.0-9) ... > Analyzing /usr/X11R6/lib/X11/app-defaults: > drwxr-xr-x 14 root root 4096 Dec 17 14:32 /usr > drwxr-xr-x 6 root root 4096 Dec 17 14:31 /usr/X11R6 > drwxr-xr-x 5 root root 4096 Dec 17 14:32 /usr/X11R6/lib > drwxr-xr-x 14 root root 4096 Dec 17 14:33 /usr/X11R6/lib/X11 > drwxr-xr-x 2 root root 4096 Dec 17 15:12 >/usr/X11R6/lib/X11/app-defaults > ERROR: /usr/X11R6/lib/X11/app-defaults is not a symbolic link. The package > preinst script should have failed. > Please report the package name, version, and the text of the above error > message(s) to <[EMAIL PROTECTED]>. > dpkg: error processing xlibs (--configure): > subprocess post-installation script returned error exit status 1 > Errors were encountered while processing: > > Package: xlibs > Status: install ok half-configured Looks like the tgif package is causing /usr/X11R6/lib/X11/app-defaults to be installed as a directory rather than a symlink to a directory: > # dpkg -S X11/app-defaults | grep -v ' /etc/X11/app-defaults' > tgif: /usr/X11R6/lib/X11/app-defaults > tgif: /usr/X11R6/lib/X11/app-defaults/Tgif -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]