Since the latest version of GIMP has not been included in the main 12.04 repositories because it was not ready at release time you have to use a PPA at current. sudo add-apt-repository ppa:otto-kesselgulasch/gimp<br></br>sudo apt-get update<br></br>sudo apt-get install gimp TIP: Go to the “Windows” menu and select ‘Single-Window Mode’ to use Gimp in one window (see screenshot).