Comment 11 for bug 1515972

For me, it's

sudo ls -lah /var/crash/
[sudo] Passwort für thomas:
insgesamt 189M
drwxrwsrwt 1 root whoopsie 682 Jun 9 07:52 .
drwxr-xr-x 1 root root 130 Jul 26 2015 ..
-rwxrwxrwx 1 root whoopsie 0 Jun 8 17:19 .lock
-rw-r----- 1 thomas whoopsie 155M Jun 6 12:04 _opt_phpstorm_PhpStorm-2017.1.1_jre64_bin_java.1000.crash
-rw-r----- 1 thomas whoopsie 7,9M Mai 31 12:33 _usr_bin_gedit.1000.crash
-rw-r--r-- 1 thomas whoopsie 0 Mai 31 12:33 _usr_bin_gedit.1000.upload
-rw-r----- 1 thomas whoopsie 1,3M Jun 8 22:46 _usr_bin_gnome-flashback.1000.crash
-rw-r--r-- 1 thomas whoopsie 0 Mai 31 12:35 _usr_bin_gnome-flashback.1000.upload
-rw-r----- 1 thomas whoopsie 1,9M Jun 2 08:02 _usr_bin_kactivitymanagerd.1000.crash
-rw-r----- 1 thomas whoopsie 15M Jun 9 07:19 _usr_bin_shutter.1000.crash
-rw-r--r-- 1 thomas whoopsie 0 Jun 4 06:53 _usr_bin_shutter.1000.upload
-rw-r----- 1 root whoopsie 2,9M Jun 9 07:53 _usr_lib_xorg_Xorg.0.crash
-rw-r----- 1 thomas whoopsie 5,1M Jun 2 08:21 _usr_share_apport_apport-gtk.1000.crash

Seems that shutter played a role in my case. I load shutter as a tray Icon. If shutter (or any other tiny tray-iconed program) brings down the whole desktop, that should not be (even if the program itself crashes).