Sonarr/Mono crashing hard on Ubuntu 14.04 [solved, not a sonarr issue]

My server startups and Sonarr starts and runs fine for a few days to a week. Then it just freezes.

The Mono process can’t be killed, even with kill -9
Worse, I can’t reboot. I have to force Power Off by holding the power key.

My server is running a headless Ubuntu 14.04

Sonarr Version
2.0.0.3953
Mono Version
4.2.3 (Stable 4.2.3.4/832de4b Wed Mar 16 13:19:08 UTC 2016) installed from Mono Project

Server also runs MythTv backend, sabnzbd, transmission, and CouchPotato
When Sonarr/Mono crashes, my other server programs continue happily running and i can ssh in no problem.

Any thoughts?

Sonarr installed following the instructions posted in the wiki, using the upstart config file…

Enable ((trace logging)) to see what Sonarr is doing when it hangs. Also worth capturing standard output and error for the mono instance to see if mono reports anything.

Also knowing which kernel version you’re running (uname -a) to see whether its a known issue with mono.

Turns out it is not sonarr, it also happens with other server apps

I have a usb drive that does not stay up.

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