Got in my S this morning and noticed my HVAC setting was at 76 degrees, which definitely was not where I left it yesterday after my commute home in 90 degree weather. Nobody else had driven it, and I hadn't even opened up the Tesla app (or played with Visible Tesla on my PC). As I start my drive, I notice my Trip A/B counters weren't displayed on the dash. Went in to settings and they were unchecked. I definitely didn't do that. I decided to check the rest of the controls settings. Auto-lower had been set up at 100+MPH. I didn't do that either. No software update notification last night. No release notes this morning, so I don't think I got a firmware download. I'm at v8.1(17.26.17), although I don't remember what build I was at previously and when. Weird.