I have been fighting this same issue, nearly positive it is a Godaddy hosting issue. Combination of their Shared Linux hosting\PHP\Wordpress. I speculate that not enough resources are allocated for php to run properly. I am going to experiment with a php.ini file with is the basic config file when php loads.
I have found a solid work around if you are in a pinch. In the cPanel go to ‘Software/Service’ then PHP Process’ and then click ‘Kill Processes’ Button. It should at lease allow you to continue work.
Good Luck!
