I think this is a DNS resolver issue. I resolved it installing pdns-recursor and setting my network manually. In the network settings as DNS I put 127.0.0.1 . It worked for me and it resolved also another problem I had about the firefox addon that I couldn't install.
-- package ttf-mscorefonts-installer 2.6 failed to install/upgrade: subprocess post-installation script returned error exit status 1 https://bugs.launchpad.net/bugs/431217 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
