Instead of pinging the forum with your message, you might want to add some more info about the application, you are trying to install with... Basically your repository settings are screwed Is it HildonApplicationManager you are using or FasterApplicationManager or plain apt-get in X-Terminal application??? Please add the output in X-Terminal of Code: apt-cache policy libqt4-declarative libqt4-script
apt-cache policy libqt4-declarative libqt4-script