squeeze pkg on lenny: bug?

[whollygoat@letterboxes.org]

Just installed lenny (5.0.0) from CD.  For some
reason, aptitude did not get installed.  Tried
to install it, but it had unmet dependencies.

--------------
# apt-get install aptitude
[snip]
The following packages have unmet dependencies:
  aptitude: Depends: libapt-pkg-libc6.7-6-4.6
            Depends: libept0 (>= 0.5.22) but it is
not going to be installed
--------------

libept0 also depends on libapt-pkg-libc6.7-6-4.6
which is a virtual package provided by apt. When I
looked at apt I discovered that version 
0.7.20.2+squeeze1 was installed.

Web research showed that people had a similar 
problem, but with testing, and the solution was to 
downgrade apt.  I downgraded apt to 0.7.20.2+lenny1 
and was then able to install aptitude.

So why did I have a +squeeze1 pkg on a lenny box?
After the reboot that finishes the install I went 
to edit /etc/apt/sources.list and was surprise to
find that it was wonky. No standard repository was
there, the security entry pointed to squeeze and 
the volatile entry was improperly formatted.

I've used this same CD and the same mirror 
(mirror.peer1.net) to install 4 or 5 other machines
recently, and this is the first time I've seen
squeeze weirdness on a lenny install.  Should I 
report this, and if so, against what package?

will
-- 
  
  whollygoat@letterboxes.org

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