I ran into something similar recently on a Debian NAS. It was something to do with the power management settings on the drive. Tweaked a couple of settings and the problem so far hasn’t arisen again 2+ months later.

I preordered a Jolla. Chasing that “0.6 % Other” high.

Portugal runs a lot of technology/near-shore outsourcing for across Europe where English is still a common collaboration language, where Spain supports a lot of Tourists across the Eurozone, and generally supports those tourists in multiple languages.

I’d expect this contributes at least partially to the difference.