A quick jotting-down of the steps I followed to get a newer release of ImageMagick installed on Ubuntu 11.04.
cd
wget http://imagemagick.mirrorcatalogs.com/ImageMagick-6.8.0-2.tar.gz
tar xvfz ImageMagick-6.8.0-2.tar.gz
cd ImageMagick-6.8.0-2/
./configure -disable-shared
sudo make
sudo make install
cd
rm -rf ImageMagick-6.8.0-2/
sudo reboot
Note the sudo reboot.
Careful doing so on a production server.
I was in need of a newer version of ImageMagick while working on my PHP-ImageEffects library. The goal of the library was to apply Instigram filters to image resources.
Not yet all the way there, though :(