Christian: what versions of 'unity', 'unity-asset-pool' and 'humanity-icon-theme' and 'ubuntu-mono' do you have installed?
dpkg -l unity unity-asset-pool humanity-icon-theme ubuntu-mono
Christian: what versions of 'unity', 'unity-asset-pool' and 'humanity- icon-theme' and 'ubuntu-mono' do you have installed?
dpkg -l unity unity-asset-pool humanity-icon-theme ubuntu-mono