Hello, im trying to downgrade php to 5.2 following a tutorial:

put the attached karmic.list in /etc/apt/sources.list.d and the attached "php" into /etc/apt/preferences.d.

Code:
sudo apt-get update
sudo apt-get remove php5 libapache2-mod-php5 php5-xsl php5-gd php-pear php5-mysql php5-curl php5-memcache
sudo apt-get install php5 libapache2-mod-php5 php5-xsl php5-gd php-pear php5-mysql php5-curl php5-memcache
When i run the command to install php 5.2 this error appears (Sorry, its in portuguese, i will try to translate it) :

Code:
Os pacotes a seguir têm dependências desencontradas:
 libapache2-mod-php5 : Depende: php5-common (= 5.3.10-1ubuntu3) mas 5.2.10.dfsg.1-2ubuntu6 está para ser instalado
E: Impossível corrigir problemas, você manteve (hold) pacotes quebrados.

English

Code:
The following packages have dependencies found: 
 libapache2-mod-php5 : Depends: php5-common (= 5.3.10-1ubuntu3) but 5.2.10.dfsg.1-2ubuntu6 is going to be installed
E:  Its impossible to fix this problem, you kept (hold) broken packages.
How do i fix this?

Regards