I'm with problems with ca-certificates. Every site that I try to access ask me for a confirmation of the certification and my update is not working 100% too
$ sudo rm -rf /etc/ssl/certs/* $ sudo update-ca-certificates Updating certificates in /etc/ssl/certs... 152 added, 0 removed; done. Running hooks in /etc/ca-certificates/update.d....done. $ sudo apt-get update [...] Err private-ppa.launchpad.net precise/main amd64 Packages server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none Err private-ppa.launchpad.net precise/main i386 Packages server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none Ign private-ppa.launchpad.net precise/main Translation-en_US Ign private-ppa.launchpad.net precise/main Translation-en Fetched 1,118 kB in 44s (24.9 kB/s) E: Some index files failed to download. They have been ignored, or old ones used instead.