@Cookie : hmmm, true, I didn't notice the "Unlock now" button which is quite out of place IMO.
But I think what ahmetgns meant here was more "Cancel locking, I was just fooling around as the useless user I am", or something similar.
Apart from that button, the information in the popup makes it pretty clear that it's meant to be displayed on entering lock mode. It's how I understand it anyway.
@ahmetgns : Being active on the (official) french support forums, I'm as tired as you of the "locked out of messenger please help meh poor soul" threads, but well, I don't know if such a measure would change anything... Newbz will still be newbz.
And I don't worry for me, but just find me an example of a software prompting two popups consecutively? There's none (ok, maybe a handful), because that's just nonsense