Nautilus process using 100% of CPU

I found a strange issue in my openSUSE Tumbleweed: sometimes I noticed that my laptop is overheated so I ran “top” in terminal and I found that there’s Nautilus (3.8) using 100% CPU. As I ran sudo killall nautilus pc stops working and the CPU calms down.
Why does this happen?
I’ve got three ideas:

  1. because I use pulseaudio-equalizer
  2. because I’m visiting YouTube, that needs flashplayer
  3. because I connected my phone to pc, transfered a file and then closed Nautilus
    I know that my ideas are nonsenses, so please help me!

This is CLOSED and will be moved to the Tumbleweed forum.

Moved from Applications and open again.

I found that if you use nautilus as a desktop manager it consumes more memory