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Every site on Firefox "use an invalid security certificate"

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linux-howto

http://forums.opensuse.org – Hi. I'm running OS11.1 with Gnome, and yesterday I wanted to try Firefox 3.6, so I went to the download page, found the one-click install for it (from Mozilla repo) and installed it. It updated a bunch of other packages, and then I started the program. It wouldn't start, giving out an error about not founding some GRE thing, or something. So I shrudded and went to Yast and reinstalled the "official" Firefox 3.0.17 build. Since then, each and every site that need secure connection won't load, and the error page saying Code: Secure Connection Failed www.siteaddress.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. (Error code: sec_error_unknown_issuer)     * This could be a problem with the server's configuration, or it could be someone trying to impersonate the server.     * If you have connected to this server successfully in the past, the error may be temporary, and you can try again later.           Or you can add an exceptionÂ… I tried adding the exception, but in some cases it won't even work this way, and the error keeps showing. Also, I don't think I can add exceptions to each and every secure server in the entire world... Any suggestions about how to revert this problem? Thanks a lot. Luca (Distributions)