I solved following these instructions: http://ubuntuforums.org/showthread.php?t=1311774
-- Firefox not installing add-on (download error -228) https://bugs.launchpad.net/bugs/458259 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
