We have two RB922 in our tower, one with 40 and another with 25 clients running on NV2, however, we noted that both restart occasionally logging the message:

"System, error, critical system rebooted because of failure kernel"
"System, error, critical router was rebooted without proper shutdown"

We contacted the support of Mikrotik and already seen energy, grounding, redid the settings via netinstall, lower power RB922, check possible interference, but nothing so far decided.

RouterOS to update the version of 6:36 to try to solve Kernel Panic problems, but the RB922 continue rebooting ... does anyone have any idea what might be happening?

Alexandre