Phone logged out again, so that's 2 days, same as Sander. This is on Chrome for Android.
Where has my thread gone??
Still logged in here. I'm not seeing any pattern yet...
Laptop just logged me out again after 3 days. As you say, it's hard to spot a pattern.
@BeateR: Do you use multiple devices on which you're logged in here as well, or only the one?
edit: I somewhat suspected this: I was now logged out on my other machine, ~96 hours after the last time.
[ Edit: Edited on 21 Mar 2025, 10:35 GMT by Sander ]
Locked out again. 
Logged out on phone after ~15 hours. 
Logged out again on my secondary machine, at most 72 hours after the previous time (though it could've been less, as I didn't touch this machine during the weekend), while the main machine still has me logged in, now for more than a week. I am baffled.
I'm really are somewhat relieved that not only I have this problem. Otherwise I would think only I am too silly. 
[ Edit: Edited on 24 Mar 2025, 09:21 GMT by BeateR ]
My main machine lasted 11 days, before now being logged out again. *sigh*
[ Edit: Edited on 28 Mar 2025, 08:01 GMT by Sander ]
About the same for me, working on a desktop (Windows + Chrome).