This is the result of rpm -qa | grep gimp on my 11.3 system:
gimp-help-2.4.2-6.1.noarch
gimp-module-hal-2.6.8-6.1.x86_64
libgimpprint-4.2.7-15.1.1.x86_64
gimp-branding-openSUSE-11.3-4.1.noarch
gimp-plugins-python-2.6.8-6.1.x86_64
gimp-help-browser-2.6.8-6.1.x86_64
gimp-2.6.8-6.1.x86_64
Like Carlos E.R., I have several more packages than you do. I would consider installing these additional packages to see if that solves your problem.