Well this is the second time I've tried W3 Total Cache and I'm now reminded why I dumped it in the first place.
I'm sure this plugin works fine for many people but for me it causes many problems, conflicts and slows down my site (even in the admin panel). By far the most problematic WP plugin I have ever used. Again, this plugin must work great in many situations but for me it has only been a complete train wreck. Currently running WP 3.8.1, Atahualpa 3.7.12 and several other plugins. Sorry to complain, but I've never had issues like this with any other WP plugins. :(