Fixing dropbox 100% CPU starting Ubuntu 2016

Uninstalled and reinstalled dropbox using followed instructions here:

https://www.dropbox.com/en/help/246

Specifically:

Add the following line to /etc/apt/sources.list.d/dropbox.list
(Replace trusty with your build's name below.)

deb http://linux.dropbox.com/ubuntu trusty main 
 
To import our GPG keys into your apt repository, perform the following command from your terminal shell:

$ sudo apt-key adv --keyserver pgp.mit.edu --recv-keys 1C61A2656FB57B7E4DE0F4C1FC918B335044912E


"Removed" user installed dropboxd using followed instructions here:

mv ~/.dropbox-dist ~/.dropbox-dist_old

Ask dropbox to reinstall the dropboxd in the userspace

dropbox start -i


Now things are working!