....to be perplexed and irritated that MN....

[SuburbanSprawl]

....has suddenly started to demand that I prove I'm human every ten minutes?

How do they do that?

There is a bot invasion at the moment, so that's probably why they're doing it. Are you using a VPN?

But are you?

The validation window pops up as soon as I try to move from one page to another, if I haven't changed pages for a few minutes

Yes, using a VPN.

But it only asks me on the PC. Not on the phone. And I'm using the same VPN on both.

Thing is, once a session, fine. But given that I've established I'm not a robot at the start of the session, you'd think that they'd assume I haven't become a robot since last they asked.