strods - Okay, I have created a support ticket on the website. Actually, it reboots almost every minute. uptime: 1m8s version: 6.28 build-time: Apr/15/2015 15:18:31 free-memory: 12.7MiB total-memory: 128.0MiB I downgraded to 6.27 and everything works again, with ~100MiB free memory most the time.

6.28 seems broken to me (RB951G-2HnD)
Random reboot every few minutes.