This should be fixed.
It looks like I have not installed sdk. But when I installed it, I got !SUBENTRY 1 org.eclipse.equinox.p2.director 2 0 2012-04-13 14:58:54.521 !MESSAGE Unable to satisfy dependency from org.eclipse.draw2d.sdk.feature.group 3.8.0.v20110622-0958 to org.eclipse.draw2d.doc.isv [3.8.0.v20110622-0958]. !SUBENTRY 1 org.eclipse.equinox.p2.director 2 0 2012-04-13 14:58:54.521 !MESSAGE Unable to satisfy dependency from org.eclipse.gef.sdk.feature.group 3.8.0.v20110622-0958 to org.eclipse.gef.doc.isv [3.8.0.v20110622-0958].
eclipse-gef-3.8.0-0.2.20120402.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/eclipse-gef-3.8.0-0.2.20120402.fc17
Package eclipse-gef-3.8.0-0.2.20120402.fc17: * should fix your issue, * was pushed to the Fedora 17 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing eclipse-gef-3.8.0-0.2.20120402.fc17' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-5879/eclipse-gef-3.8.0-0.2.20120402.fc17 then log in and leave karma (feedback).
eclipse-gef-3.8.0-0.3.20120402.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/eclipse-gef-3.8.0-0.3.20120402.fc17
eclipse-gef-3.8.0-0.3.20120402.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.