Problem med apt-get

Jeg har et nyinstalleret debian sarge system, hvorpå jeg med apt har hentet og installeret 2 pakker (proftpd og vim). Problemet er nu at hvis jeg prøver at hente en pakke med apt får jeg en fejl, og der bliver ikke hentet noget.
ser ud som følger:

clir-web:~# apt-get install apache2
Reading Package Lists... Done
Building Dependency Tree... Done
The following extra packages will be installed:
  apache2-common apache2-mpm-worker apache2-utils libapr0 libexpat1 openssl
  ssl-cert
Suggested packages:
  apache2-doc lynx www-browser ca-certificates
The following NEW packages will be installed:
  apache2 apache2-common apache2-mpm-worker apache2-utils libapr0 libexpat1
  openssl ssl-cert
0 upgraded, 8 newly installed, 0 to remove and 0 not upgraded.
Need to get 2230kB of archives.
After unpacking 6734kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Err http://ftp.debian.org stable/main libexpat1 1.95.8-3
  Temporary failure resolving 'ftp.debian.org'
Err http://ftp.debian.org stable/main libapr0 2.0.54-5
  Temporary failure resolving 'ftp.debian.org'
Err http://ftp.debian.org stable/main ssl-cert 1.0-11
  Temporary failure resolving 'ftp.debian.org'
Err http://security.debian.org stable/updates/main libapr0 2.0.54-5
  Temporary failure resolving 'security.debian.org'
Err http://security.debian.org stable/updates/main openssl 0.9.7e-3sarge1
  Temporary failure resolving 'security.debian.org'
Err http://security.debian.org stable/updates/main apache2-utils 2.0.54-5
  Temporary failure resolving 'security.debian.org'
Err http://security.debian.org stable/updates/main apache2-common 2.0.54-5
  Temporary failure resolving 'security.debian.org'
Err http://security.debian.org stable/updates/main apache2-mpm-worker 2.0.54-5
  Temporary failure resolving 'security.debian.org'
Err http://security.debian.org stable/updates/main apache2 2.0.54-5
  Temporary failure resolving 'security.debian.org'
Failed to fetch http://ftp.debian.org/debian/pool/main/e/expat/libexpat1_1.95.8-3_i386.deb  Temporary failure resolving 'ftp.debian.org'
Failed to fetch http://security.debian.org/pool/updates/main/a/apache2/libapr0_2.0.54-5_i386.deb  Temporary failure resolving 'security.debian.org'
Failed to fetch http://security.debian.org/pool/updates/main/o/openssl/openssl_0.9.7e-3sarge1_i386.deb  Temporary failure resolving 'security.debian.org'
Failed to fetch http://ftp.debian.org/debian/pool/main/s/ssl-cert/ssl-cert_1.0-11_all.deb  Temporary failure resolving 'ftp.debian.org'
Failed to fetch http://security.debian.org/pool/updates/main/a/apache2/apache2-utils_2.0.54-5_i386.deb  Temporary failure resolving 'security.debian.org'
Failed to fetch http://security.debian.org/pool/updates/main/a/apache2/apache2-common_2.0.54-5_i386.deb  Temporary failure resolving 'security.debian.org'
Failed to fetch http://security.debian.org/pool/updates/main/a/apache2/apache2-mpm-worker_2.0.54-5_i386.deb  Temporary failure resolving 'security.debian.org'
Failed to fetch http://security.debian.org/pool/updates/main/a/apache2/apache2_2.0.54-5_i386.deb  Temporary failure resolving 'security.debian.org'
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

Håber der sidder en expert der kan forklarer hvordan jeg udbedre dette, helst på en måde så selv min mor kan hitte ud af det ;-)
På forhånd tak

sUhr