Around 2000: a colleague told me about his slow PC, rattling noises, random crashes. i did what any responsible workmate would do: told him to call IT support, I'm a web-designer (well actually I was a frontend, backend developer, database guy and project manager but devision of labor in webdevelopment didn't happen yet so my job title was webdesigner, anyway...)!

5 weeks of various visits by the IT support later, including full replacement of all PC hardware and software - still random crashes.

so one day my direct boss tells me to take a look as the corporate IT support "couldn't do it". i just went over there and encounterd a desktop PC covered in refrigorater-sticky-note-magnets.....

turns out he removed them every time "so that the IT guys have better access to the computer"...