The mouse that never worked in the afternoon..
One day (in the early 1990s) I was called out to install something-or-other in an academic department of the college I worked in that I hadn't previously been aware of.
Having set whatever it was up, the users casually mentioned that another one of their computers didn't work in the afternoon.. well, *most* afternoons. It was OK in the morning, but after lunch it apparently stopped and the person using it couldn't do any more work. This had been going on for months. It didn't seem to particularly bother them that they spent their afternoons sitting around doing nothing.
It transpired that the problem was that the mouse stopped working, and with no mouse they couldn't possibly interact with the state-of-the-art Windows 3.1 PC. They just accepted that it didn't work in the afternoon.
The problem was a daft one.. the early optomechnical mouse had optical sensors internally which were being flooded out by the sunlight shining on the plastic. Putting in a better mouse fixed the problem. But what got me was the laid-back attitude to not doing any work. Maybe not surprising in that environment.
(The same department also had a then-massive 21" CRT monitor on another system that they insisted on running in VGA resolution despite there being no reason to do so. They went ballistic when I tweaked it to 800x600 pixels).