You must disable Syncthing startup manually if you're not going to use it. This will save a considerable amount of ram.

Now of course you could remove Syncthing entirely using synaptic package manager, but if you would like to keep it around and just disable this ridiculous inclusion of it continuously running even when you don't want it to, its actually pretty simple.

Simply open up a terminal and enter the following
<code>
sudo rm /etc/xdg/upstart/syncthing.conf
</code>
Hit enter, enter your password and your done.

I prefer to just rename it
<code>
sudo mv /etc/xdg/upstart/syncthing.conf /etc/xdg/upstart/syncthing.conf.bak
</code>
