I'm using Wordpress 4.2.2 and Suffusion 4.4.9.
I haven't done anything to the site for a few months and it's been hosted on GoDaddy for years.
I deactivated all of the plugins but the problem remains.
These are just simple links to posts within the site: some work, some don't.
You can see what's happening at recusive.com/universal-wisdom.