The Firefox maintainers for the Ubuntu systems have just pushed the latest 36.0.1 update for Mozilla's browser into the repositories and it is now available for upgrade.
The Firefox 36.x branch arrived pretty fast in the Ubuntu repos, but it took some time until the first update was made available to the users. As usual, it's about fixes and a few important changes that were made by developers. Most important of all, this update repaired a regression that was introduced with the previous version.
"USN-2505-1 fixed vulnerabilities in Firefox. This update removed the deprecated "-remote" command-line switch that some older software still depends on. This update fixes the problem. We apologize for the inconvenience," reads the official security notice from Canonical.
The affected platforms are Ubuntu 12.04 LTS, Ubuntu 14.04 LTS, and Ubuntu 14.10. To get this, you can simply run the Update Manager application, but you can also use the terminal.
Open a terminal and enter the following commands (you will need to be root and you will need Internet access):
sudo apt-get dist-upgrade