Back in the summer, I got a new computer at work. I'd been using it without incident for a couple of months before I noticed the warning sticker between the "delete" key and the up arrow.
I nearly jumped out of my chair. Have they given me an exploding keyboard? I wondered.
But then I checked the website on the warning. It has advice on workstation setup, posture, and health and work habits; not bomb disposal tips. So I have relaxed about it.