I submitted qjackctl-0.3.6 to updates-testing in Fedora. Please give a day or two until it gets pushed and the mirrors are populated.
Te give positive or negative karma, please visit: F-11: https://admin.fedoraproject.org/updates/qjackctl-0.3.6-1.fc11 F-12: https://admin.fedoraproject.org/updates/qjackctl-0.3.6-1.fc12 F-13: https://admin.fedoraproject.org/updates/qjackctl-0.3.6-1.fc13
If you are impatient, the above pages also contain a link from where you can manually download the RPM's for your architecture.
Cheers, Orcan