Hi,
I have continuously crashes since upgrade to 6.9.0. When having disk activity the system crashes after seconds/minutes. The screen become black, no reaction on keyboard presses and not responses on the network.
I mentioned this first when unbalance a drive with the plugin. Same effect when doing rsync in ssh shell.
I have a Gigabyte Z170N-WIFI-CF mainboard with Celeron G3900. I use a LSI 9267-8i SATA controller.
After going back to 6.8.3 everything is stable.
Hope this helps to fix this for the future.
Dega