I've done a clean installation of Ubuntu 14.04 and tried to install Unity Tweak Tool right after updating my packages. At the first run, I've managed to change my theme and my icons, but after rebooting my machine, all the configurations that I changed were ignored and the default theme and icons of Ubuntu were loaded. After that, I can only see my modified themes and icons if I run nautilus on super user mode or running the following commands:
dconf reset -f /org/compiz/ setsid unity
But as soon as I restart my machine, these settings are gone.
I tried to find a solution to this and found many topics related to configurations that could be done with the dconf editor, but none of them did me any good. I also tried purging Unity Tweak Tool, cleaning the cache and reinstalling it from the software center, but at the end it didn't change a thing. The gnome tweak tool also cannot change my theme or icons.
Can someone give me a light on what is happening here ?