It is KDE's new file indexer.
In yours installation you seem to have the old settings interface and the new file indexer. I've upgraded to 4.13 in Kubuntu and the Nepomuk search settings was replaced.

You can disable baloo editing: "~/.kde/share/config/baloofilerc"
Change "Indexing-Enabled=false" to "Indexing-Enabled=true"

Everything about these services are too intrusive. I wish I could upgrade mysql without having to remove kde from my system.

regards
Talvik

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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