I'm using FireFox 22.0 on Windows 7 and have a couple of client certificates registered which are outdated now. When I go to Tools|Options|Advanced|Encryption|View Certificates|Your Certificates, select all my certificates, click
Delete... and confirm with
OK the certificates seem gone (none are shown). Pressing
OK in the Certificate Manager and reopening it shows the certificates again. Is this a known bug?
How can I reliable delete the certificates?