Problem upgrading to libc6 2.5-9 amd64

[pedxing <pedxing@gmail.com>]

I ran into this problem when trying to do my weekly aptitude upgrade
on an AMD64 system running Lenny:
----
Preparing to replace libc6 2.3.6.ds1-13 (using .../archives/
libc6_2.5-9_amd64.deb) ...
Unpacking replacement libc6 ...
dpkg: error processing /var/cache/apt/archives/libc6_2.5-9_amd64.deb
(--unpack):
 trying to overwrite `/usr/lib64', which is also in package gtk-qt-
engine
Errors were encountered while processing:
 /var/cache/apt/archives/libc6_2.5-9_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install.  Trying to recover:
dpkg: dependency problems prevent configuration of libc6-dev:
 libc6-dev depends on libc6 (= 2.5-9); however:
  Version of libc6 on system is 2.3.6.ds1-13.
dpkg: error processing libc6-dev (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of locales:
 locales depends on glibc-2.5-1; however:
  Package glibc-2.5-1 is not installed.
dpkg: error processing locales (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of binutils:
 binutils depends on libc6 (>= 2.5-5); however:
  Version of libc6 on system is 2.3.6.ds1-13.
dpkg: error processing binutils (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 libc6-dev
 locales
 binutils
----

Is this just a transient condition, or do I have a problem?  Should I
be reporting a bug?

-Ped