Bug#922062: ca-certificates package post-installation script subprocess returned error exit status 1

[Michel Meyers]

Mystery solved: Somebody (or something) placed a private key in a file 
called privkey.pem and stored it in /etc/ssl/certs. This caused openssl 
rehash to silently exit with error code 1, thus causing the whole 
postinst script to fail.

After cleaning out the offending file, the package installed without any 
problems.

- Michel