1 Week ago I took down the development version of an internal demo, leaving only the prod one (temporary space issue). Colleagues were told n+15 times via email, face to face, comments on tickets etc. The prod one has also been live for weeks, and again, they were told when it went up.

This just happened:

Colleague 1: practiseSafeHex can you help me, the demo doesn't seem to be working.

Me: *logs in*, *click around* ... seems fine dude. Are you using the correct URL: <prod-url>.

Colleague 1: let me try again and see.
Colleague 2: practiseSafeHex i'm with Colleague 1, were trying to use the demo, and its not working. Can you have a look, we need it.

Me: I just told him, its fine, I think you have the wrong URL <prod-url>. Can you try again.

Colleague 2: No I have the right one, can you check it.

Me: *does nothing*, yep i've had a look at it, can you try again: <prod-url>.

Colleague 2: Ah its back now, cheers.

They are with a customer now, so I won't say anything, when they get back, one of them is being castrated.