What is baloo_file_extractor and why is it humping my hard drive?

[Nikos Chantziaras]

Hello.

I just updated to KDE 4.13. As soon as I logged in, a windows popped up 
saying some kind of "File Watcher" needs my root password. I typed that in.

Then, my hard disk was getting hit like no tomorrow. It's been over 20 
minutes now and the disk is still getting hammered. System Activity says 
it's the "baloon_file_extractor." I suspected some file indexing maybe, 
but that can't be. I have all indexing disabled in System Settings:

   http://s24.postimg.org/btf89a96d/indexing.png

What is happening?

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