Bug#409240: Kernel and initrd image symlinks aren't updated properly

Package: linux-2.6
Version: 2.6.18-7, 2.6.18.dfsg.1-9
Severity: important

Attempting to install (ignore the fact that the .deb is from
www.backports.org: the problem is clearly present in the latest
versions in testing and unstable):

    # dpkg -i linux-image-2.6.18-3-k7_2.6.18-8~bpo.1_i386.deb
    Selecting previously deselected package linux-image-2.6.18-3-k7.
    (Reading database ... 118793 files and directories currently installed.)
    Unpacking linux-image-2.6.18-3-k7 (from .../linux-image-2.6.18-3-k7_2.6.18-8~bpo.1_i386.deb) ...
    Done.
    Setting up linux-image-2.6.18-3-k7 (2.6.18-8~bpo.1) ...

     Hmm. The package shipped with a symbolic link /lib/modules/2.6.18-3-k7/source
     However, I can not read the target: No such file or directory
     Therefore, I am deleting /lib/modules/2.6.18-3-k7/source

    Running depmod.
    Finding valid ramdisk creators.
    Using mkinitramfs-kpkg to build the ramdisk.
    initrd.img() points to  (/boot/initrd.img-2.6.16-2-k7) -- doing nothing at
/var/lib/dpkg/info/linux-image-2.6.18-3-k7.postinst line 585.
    vmlinuz() points to  (/boot/vmlinuz-2.6.16-2-k7) -- doing nothing at
/var/lib/dpkg/info/linux-image-2.6.18-3-k7.postinst line 585.

Huh?  I need symlinks properly updated, but they are not:

    # cat /etc/kernel-img.conf