Created attachment 519120 [details]
This Connection is Untrusted

Description of problem:
With great hesitation I file this (as I may be reading the situation incorrectly), but here goes:

I have a Debian Squeeze server running Apache. It comes with a number of certs installed in /etc/ssl. I got a Comodo certificate from directNIC, installed it on the server, and was able to access my https site fine on x86_64 Fedora 15 with Firefox 5 and Firefox 6. I did not install any of the intermediate certs since my first test worked, so I presumed the intermediate certs were already there by default.

Weeks later I went to another Fedora machine and it was giving "This connection is untrusted" when I hit the same site. Quite baffled I tried it on all the machines we have here. All of the i686 boxes gave the warning, none of the x86_64 gave the warning. More specifically, the error was "sec_error_unknown_issuer". I'll attach screenshots.

Version-Release number of selected component (if applicable):
firefox-6.0-1.fc15.x86_64
ca-certificates-2011.70-2.fc15.noarch

firefox-6.0-1.fc15.i686
ca-certificates-2011.70-2.fc15.noarch

firefox-5.0-2.fc15.i686
ca-certificates-2011.70-2.fc15.noarch


How reproducible:
Well...Here's one way...


Steps to Reproduce:
1. Install Debian Squeeze. ;)

2. Get a Comodo "Instant SSL Pro" certificate from directNIC.com or whomever.

3. Install the new cert for the domain in /etc/ssl/keys or wherever and set up apache to point at it. Don't install the ca-bundle.crt (with intermediate certs) that comes with the new certificate.
  

Actual results:
Works fine on x86_64, gives warning on i686.


Expected results:
It should give a "sec_error_unknown_issuer" warning on x86_64. 


Additional info:
Yikes. Comodo has been known to have problems, so this is double ungood, if I'm reading the screen correctly... Lets hope not. ;)