spot's firefox4 breaks fedpkg upload

[Iain Arnell]

It looks like the nss-3.12.8-0.1.beta1.fc13 in spot's firefox4 repo is
breaking fedpkg upload (and new-sources, of course) when you have a
shiny new 2048-bit client certificate.

My old certificate expired yesterday, so I got a shiny new one.
Firefox itself was okay - no problem to connect to koji web interface;
and koji client was okay. But curl seems to have a problem:

curl -v -I --cert .fedora.cert --cacert .fedora-server-ca.cert
https://pkgs.fedoraproject.org/repo/pkgs/upload.cgi
* About to connect() to pkgs.fedoraproject.org port 443 (#0)
*   Trying 209.132.181.4... connected
* Connected to pkgs.fedoraproject.org (209.132.181.4) port 443 (#0)
* Initializing NSS with certpath: /etc/pki/nssdb
*   CAfile: /home/iarnell/.fedora-server-ca.cert
  CApath: none
* Unable to load client key -8178.
* Closing connection #0
curl: (58) Unable to load client key -8178.

After removing firefox4 and downgrading nss-* to the proper f13
versions again, all is fine.

-- 
Iain.