Comment 12 for bug 93081

Indeed, it seemed to accept the certificate of your school permanently. So it seems Konqueror makes a difference between certificates that do not match the domain name and self-signed certificates.

I still think this is a bug. If you disagree, could you tell me what Konqueror should do after it has offered to accept the certificate forever? If not accept it forever, it should not even offer to do that (and thus require an extra click). If it deems name-mismatched certificates too insecure to be accepted forever, maybe it should not accept them at all, or at least say "name mismatch, only accepting for this session" instead of requiring the user to choose between options that will not be honored anyway.

For me this bug is one of the only reasons I have not retired Firefox yet and gone 100% konqueror.