yancho@Ubuntu:~$ sudo apt-get -t testing install libapache2-mod-php5 php5-mapscript libecw php5-chameleon
Reading package lists... Done
Building dependency tree... Done
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:
  libapache2-mod-php5: Depends: libc6 (>= 2.3.6-6) but 2.3.6-0ubuntu20.4 is to be installed
                       Depends: apache2.2-common but it is not installable
  libecw: Depends: libc6 (>= 2.3.6-6) but 2.3.6-0ubuntu20.4 is to be installed
          Depends: libgcc1 (>= 1:4.1.1-12) but 1:4.0.3-1ubuntu5 is to be installed
  php5-mapscript: Depends: libc6 (>= 2.3.6-6) but 2.3.6-0ubuntu20.4 is to be installed
                  Depends: libfreetype6 (>= 2.2) but 2.1.10-1ubuntu2.2 is to be installed
                  Depends: libgcc1 (>= 1:4.1.1-12) but 1:4.0.3-1ubuntu5 is to be installed
                  Depends: libgdal1-1.3.2 but it is not going to be installed
                  Depends: libgeos-c1 (>= 2.2.3) but it is not installable
E: Broken packages