Memtest86 didn’t find any problems, but I’ll try out some different RAM configurations. Got some spare DIMMs flying around…

Debian for me on all VMs and all servers that do not run a hypervisor. Can’t stand the snaps that Ubuntu introduced in a very aggressive and intrusive way. Don’t need a GUI either so Debian is a natural choice for me. Pro tip for non critical services: Enable the backports repository to get modern packages with recent versions. I’ve never encountered a problem, but still would not recommend it for a mission critical service.