A insufficiency with potential security implications has been found in Konqueror web browser, shipped with the K Desktop Environment 4. Presence of this issue is preventing user(s) from using X.509 digital certificates for e.g. site / email / code electronic signing. Upstream bug report: https://bugs.kde.org/show_bug.cgi?id=185288
This issue affects the versions of the kdebase-4.* package, as shipped with Fedora release of 9, 10 and devel. Workaround: To use functionality provided by digital certificates in affected Fedora releases / packages, please temporarily downgrade to particular kdebase3-* packages, which don't suffer on this insufficiency. This issue doesn't affect the versions of the kdebase package, as shipped with Red Hat Enterprise Linux 2.1, 3, 4, or 5.
We will need to wait on upstream for this one. Once it's fixed there, it will be fixed in Fedora.