Hello Linux Geeksters. As you may know, the Unity Dash stores all the searches performed by the users, while Zeitgeist remembers the latest opened files. If you are concerned about your privacy, the easiest way to disable all the Unity features that store the recent activity is to install Privacy Indicator.
The latest version available is Privacy Indicator 0.0.5, which now prevents ~/.local/share/zeitgeist/activity.sqlite-wal from growing too much and brings updated translations.
In this article I will show you how to install Privacy Indicator 0.0.5 on Ubuntu 14.10 Utopic Unicorn and Ubuntu 14.04 Trusty Tahr.
Because it is available via PPA, installing Privacy Indicator 0.0.5 on Ubuntu 14.10 and Ubuntu 14.04 is easy. All you have to do is add the ppa to your system, update the local repository index and install the indicator-privacy package. Like this:
$ sudo add-apt-repository ppa:diesch/testing
$ sudo apt-get update
$ sudo apt-get install indicator-privacy
Optional, to remove indicator-privacy, do:
$ sudo apt-get remove indicator-privacy