unsatisfied dependancies in dapper

I noticed that the Update Manager of Dapper has been reporting "Cannot install all available updates" for the following packages since sometime last week: build-essential dpkg-dev fakeroot g++ libatm1 libc6-dev patch.

Here are the results of "aptitude upgrade" and "aptitude dist-upgrade":

wenzhuo@panda:~$ sudo aptitude upgrade
Reading package lists... Done
Building dependency tree... Done
Reading extended state information
Initialising package states... Done
Building tag database... Done
The following packages have been kept back:
  build-essential dpkg-dev fakeroot g++ libatm1 libc6-dev patch
0 packages upgraded, 0 newly installed, 0 to remove and 7 not upgraded.
Need to get 0B of archives. After unpacking 0B will be used.

wenzhuo@panda:~$ sudo aptitude dist-upgrade
Reading package lists... Done
Building dependency tree... Done
Reading extended state information
Initialising package states... Done
Building tag database... Done
The following packages are BROKEN:
  build-essential debhelper debootstrap dpkg-dev fakeroot g++ g++-4.1
  gcc-4.0 libatm1 libc6-dev libstdc++6-4.1-dev linda lintian patch
The following NEW packages will be automatically installed:
  linux-libc-dev
The following NEW packages will be installed:
  linux-libc-dev
The following packages will be REMOVED:
  binutils linux-kernel-headers
7 packages upgraded, 3 newly installed, 2 to remove and 0 not upgraded.
Need to get 0B/8106kB of archives. After unpacking 6275kB will be used.
The following packages have unmet dependencies:
  linda: Depends: binutils but it is not installable
  debootstrap: Depends: binutils but it is not installable
  fakeroot: Depends: libc6 (>= 2.5-5) but 2.3.6-0ubuntu20.5 is installed.
  debhelper: Depends: binutils but it is not installable
  g++-4.1: Depends: gcc-4.1-base (= 4.1.2-15ubuntu3) which is a virtual package.
           Depends: gcc-4.1 (= 4.1.2-15ubuntu3) which is a virtual package.
           Depends: libc6 (>= 2.6-1) but 2.3.6-0ubuntu20.5 is installed.
  libatm1: Depends: libc6 (>= 2.6-1) but 2.3.6-0ubuntu20.5 is installed.
  g++: Depends: cpp (>= 4:4.1.2-8ubuntu2) but 4:4.0.3-1 is installed.
       Depends: gcc (>= 4:4.1.2-8ubuntu2) but 4:4.0.3-1 is installed.
       Depends: gcc-4.1 (>= 4.1.2-1) which is a virtual package.
  gcc-4.0: Depends: binutils (>= 2.16.1cvs20051214) but it is not installable
  libstdc++6-4.1-dev: Depends: gcc-4.1-base (= 4.1.2-15ubuntu3) which is a virtual package.
                      Depends: libstdc++6 (>= 4.1.2-15ubuntu3) but 4.0.3-1ubuntu5 is installed.
  dpkg-dev: Depends: dpkg (>= 1.14.0) but 1.13.11ubuntu7 is installed.
            Depends: binutils but it is not installable
  libc6-dev: Depends: libc6 (= 2.6.1-1ubuntu1) but 2.3.6-0ubuntu20.5 is installed.
  patch: Depends: libc6 (>= 2.4-1) but 2.3.6-0ubuntu20.5 is installed.
  lintian: Depends: binutils but it is not installable
  build-essential: Depends: gcc (>= 4:4.1.1) but 4:4.0.3-1 is installed.
Resolving dependencies...
The following actions will resolve these dependencies:

Keep the following packages at their current version:
build-essential [11.1 (dapper, dapper, now)]
dpkg-dev [1.13.11ubuntu7 (dapper-updates, now)]
fakeroot [1.5.6ubuntu2 (dapper, dapper, now)]
g++ [4:4.0.3-1 (dapper, dapper, now)]
g++-4.1 [Not Installed]
libatm1 [2.4.1-17 (dapper, dapper, now)]
libc6-dev [2.3.6-0ubuntu20.5 (dapper-updates, now)]
libstdc++6-4.1-dev [Not Installed]
linux-kernel-headers [2.6.11.2-0ubuntu18 (dapper, dapper, now)]
linux-libc-dev [Not Installed]
patch [2.5.9-2 (dapper, dapper, now)]

Downgrade the following packages:
binutils [2.16.1cvs20060117-1ubuntu2.1 (dapper, dapper-security, now) ->
2.16.1cvs20060117-1ubuntu2 (dapper)]

Score is -411

Accept this solution? [Y/n/q/?] q
Abandoning all efforts to resolve these dependencies.
Abort.