Temporarily solution
Before NVIDIA drivers installation do:
sudo apt-get purge xserver-xorg-core
sudo sed -i 's/maverick/lucid/g' /etc/apt/sources.list
sudo apt-get update
sudo apt-get install xserver-xorg-core
echo "xserver-xorg-core hold" | sudo dpkg --set-selections
sudo sed -i 's/lucid/maverick/g' /etc/apt/sources.list
Temporarily solution
Before NVIDIA drivers installation do:
sudo apt-get purge xserver-xorg-core
sudo sed -i 's/maverick/ lucid/g' /etc/apt/ sources. list
sudo apt-get update
sudo apt-get install xserver-xorg-core
echo "xserver-xorg-core hold" | sudo dpkg --set-selections
sudo sed -i 's/lucid/ maverick/ g' /etc/apt/ sources. list
sudo apt-get update