I use Debian 6.0.6

sudo apt-get install php-pear

results in:

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:
 initscripts : Breaks: console-setup (< 1.74) but 1.68+squeeze2 is to be installed
               Breaks: initramfs-tools (< 0.104) but 0.98.8 is to be installed
               Breaks: nfs-common (< 1:1.2.5-3) but 1:1.2.2-4squeeze2 is to be installed
 keyboard-configuration : Breaks: console-setup (< 1.71) but 1.68+squeeze2 is to be installed
 klibc-utils : Breaks: initramfs-tools (< 0.103) but 0.98.8 is to be installed
E: Broken packages

How can i solve it?