apt-get problemer

hey..
jeg skulle hos min ven inst noget der hedder postfix og jeg skriver apt-get install postfix så siger den så det her:
arkDeviL--Server:~# apt-get install postfix
Reading Package Lists... Done
Building Dependency Tree... Done
You might want to run `apt-get -f install' to correct these:
Sorry, but the following packages have unmet dependencies:
  exim: Conflicts: mail-transport-agent
  libc6-dev: Depends: libc6 (= 2.2.5-13) but 2.2.5-10 is to be installed
  locales: Depends: glibc-2.2.5-13
  php4: Depends: libc6 (>= 2.2.5-13) but 2.2.5-10 is to be installed
  php4-mysql: Depends: libc6 (>= 2.2.5-13) but 2.2.5-10 is to be installed
  postfix: Depends: postfix-ldap (= 1.1.11-2)
          Depends: postfix-pcre (= 1.1.11-2)
          Conflicts: mail-transport-agent
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).


så skriver jeg apt-get -f install så siger den så:
DarkDeviL--Server:~# apt-get -f install
Reading Package Lists... Done
Building Dependency Tree... Done
Correcting dependencies... Done
The following extra packages will be installed:
  libc6
1 packages upgraded, 0 newly installed, 0 to remove and 3  not upgraded.
Need to get 0B/3349kB of archives. After unpacking 77.8kB will be freed.
Do you want to continue? [Y/n]
debconf: delaying package configuration, since apt-utils is not installed
(Reading database ... 20714 files and directories currently installed.)
Preparing to replace libc6 2.2.5-10 (using .../libc6_2.2.5-13_i386.deb) ...
Unpacking replacement libc6 ...
Setting up libc6 (2.2.5-13) ...
Current default timezone: 'Europe/Copenhagen'.
Local time is now:      Fri Aug 16 19:45:47 CEST 2002.
Universal Time is now:  Fri Aug 16 17:45:47 UTC 2002.
Run 'tzconfig' if you wish to change it.

hva skal jeg gøre ? jeg kan ik inst postfix med apt-get :( hva skal jeg gøre HELP