test case: 

open Thunar, go to /tmp. 
let the window open on this folder.

in a terminal :
    rm -r /tmp/toDel*; for i in {0..10000}; do mkdir -p /tmp/toDelDir$i; touch /tmp/toDel*; done; 
or whatever causes files/directories to be created/moved/deleted.

current behaviour:
1/memory usage will grow, cpu usage will grow : both are expected 
2/thunar will stay irresponsive forever

expected behaviour:
thunar should be abble to recover from files activity.


$ cat /proc/cpuinfo | grep "model name"
model name	: Intel(R) Core(TM) i5-2500 CPU @ 3.30GHz

$ apt-cache show thunar | grep -i version
Version: 1.6.10-2ubuntu1

$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 16.04 LTS
Release:	16.04
Codename:	xenial