I've upgraded my laptop from Dapper to Edgy today, and Firefox works nicely with https links, either typing them directly in the address bar, or clicking on a link. It works nicely on my desktop PC too, but I've been on Edgy for a longer time.
I've not tried from Thunderbird, as I'm using Evolution (but it works using Evolution links). Version : Mozilla/5.0 (X11; U; Linux i686; fr; rv:1.8.1b2) Gecko/20060601 BonEcho/2.0b2 (Ubuntu-edgy) Maybe you should completely remove firefox package (sudo apt-get --purge remove firefox) and remove firefox profile directories (rm -r ~/.mozilla ~/.firefox), then install firefox again. If that doesn't work, I'd try using another source for links (i.e. click on links from another software than Thunderbird) as the bug may be somewhere else... -- https doesn't work. https://launchpad.net/bugs/61660 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs