The .qualifier is not replaced with a timestamp during the jar build, and then pde build replaces the qualifier with proper value, but the jar is not changed, so features are not installed properly.
Created attachment 577234 [details] Fix proposition
Created attachment 577236 [details] Patch
Created attachment 577262 [details] Better patch
ws-commons-util-1.0.1-21.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/ws-commons-util-1.0.1-21.fc17
Package ws-commons-util-1.0.1-21.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 ws-commons-util-1.0.1-21.fc17' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-6130/ws-commons-util-1.0.1-21.fc17 then log in and leave karma (feedback).
ws-commons-util-1.0.1-22.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/ws-commons-util-1.0.1-22.fc17
ws-commons-util-1.0.1-22.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.