Debian 6 bind9 installation error

http://www.howtoforge.com/perfect-server-debian-squeeze-with-bind-and-courier-ispconfig-3-p4

apt-get install bind9 dnsutils

error:
Reading package lists... Done
Building dependency tree
Reading state information... Done
dnsutils is already the newest version.
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
bind9 : Depends: libbind9-60 (= 1:9.7.2.dfsg.P3-1.1) but 1:9.7.3.dfsg-1~squeeze1 is to be installed
Depends: libdns69 (= 1:9.7.2.dfsg.P3-1.1) but 1:9.7.3.dfsg-1~squeeze1 is to be installed
Depends: libisc62 (= 1:9.7.2.dfsg.P3-1.1) but 1:9.7.3.dfsg-1~squeeze1 is to be installed
Depends: libisccc60 (= 1:9.7.2.dfsg.P3-1.1) but 1:9.7.3.dfsg-1~squeeze1 is to be installed
Depends: libisccfg62 (= 1:9.7.2.dfsg.P3-1.1) but 1:9.7.3.dfsg-1~squeeze1 is to be installed
Depends: liblwres60 (= 1:9.7.2.dfsg.P3-1.1) but 1:9.7.3.dfsg-1~squeeze1 is to be installed
E: Broken packages

how to fix it ?

 

Just seen the same problem.

We fixed by adding

Code:

deb http://security.debian.org/ squeeze/updates main contrib non-free

to our /etc/apt/sources.list file, which we should have had in the first place.

Regards

Rob