My “favorite” magtape story

Random crashes on a Netware server (1-3-ish times a week) = dishwasher in the kitchen, which was immediately behind the server. Fix: Move the server (which was just on a table) to another corner of the computer room.

Regular increase in coax Ethernet network error rate = moon tides affecting nearby river and increased ground water during heavy rain affecting ground voltage level on side of building next to the river.

Poor or unable-to-connect modem link = nail through telephone cable on wall.

Misbehaving fibre optic token ring topology; 'data getting corrupted in transit' = EMP being injected into one electrical/optical transceiver on one network card in a PC closest to 'The largest laser in Europe' (and its power supply). This was at a UK Government defence research lab in the 1990s.

200MB hard disk in PC - would spin down when the case screws were inserted. Never did find the root cause (pressure on 'something'). This was my work PC so I just left off the screws.

Computer room overheats = Delivery of listing paper put on floor in front of self-contained circulating air cooling system in the corner of the computer room. Fix: Move the boxes.

Also filed under threats you never thought of: I can't find it at the moment, but there was a case report in the New England Journal of Medicine of an iron worker who presented, as I recall, vomiting blood. Turns out some years ago, he had been working with a wire wheel and felt a sharp sensation in the back of his throat, but it subsided. Over the next decade or so, he had intermittent chest pain. A wire had flown out of the spinning wire brush, he had inhaled it midflight, it had landed in his trachea. Over the next decade, it slowly migrated through the trachea and penetrated one of the great vessels of the heart. Retrieving the wire and repairing both the trachea and the great vessel was a delicate matter.

Around 1993. An overseas government office, high ranking guy,light-years beyond my rank, brilliant in his political field, complains he's lost data, AGAIN, furiously summons me to make amends about the deplorable system of which I am in charge and FIX THIS SHIT.

Office has a low standing safe next to his desk. Each safe has a little magnetic sign, one side says "open" the other "closed". While the safe was open, he put the sign on top of the safe, out of the way.

It seems (who knew?) that placing your floppy disks on top of magnetic signs might corrupt your data. I accepted responsibility, I told him, because I didn't anticipate he might do this, and I should have briefed him. On one hand it was politically expedient to end the quarrel quickly. On the other, perhaps true: never assume your users or clients have a single shred of intelligence beyond their field.

In a similar vein we recently had an issue with one employees monitors turning off when a coworker sat down. We traced it to the cylinder of the chair apprently making some electric disturbance. Our minds were blown for a while, but I remembered reading something similar.

AM radio was (still is) one of the best tools for finding issues like this sparking motor. The real trick is to find an AM radio station that you enjoy listening to every day, and when you hear interference, drop what you are doing to find the source. Engines and motors close to your server room will create disk errors and absolutely wreck any signal in unshielded wiring.

Back in the early days of large screen CRTs (19 inch color), late 80s. I was working on bringing X up on a new display board .... suddenly the whole screen sort of twisted and shifted, and the went OK again .... outside my window a really long truck with recently replaced BART (electric train) rails was going by .... essentially a large bar magnet ....

When I worked for HP, I was visiting an HP partner’s datacenter. While there, an electrician was doing work cutting metal (conduit if I recall) with a chop saw in the server room.

I did report it … since we had systems we were loaning them in that data center.

My one. I walked into the office once when we had the cable monkeys in and the DLT drives and server pile was covered in plaster dust where they had been drilling above it. Both drives died within a month. Had to replace them and all the tapes. Cheap ass director bought a rack after that.

Edit: found potato cam pictures (this was nearly 20 years ago) https://imgur.com/a/gjyCOQj

Is there a list somewhere of these crazy bug stories? In addition to some great ones in these comments, the one that always sticks out at me is the "500 mile email" story.[0] I'm sure someone must have a big collection of these somewhere.

0: https://web.mit.edu/jemorris/humor/500-miles

Reminded me of this classic about irradiated cows messing with a computer at a railway junction: https://beza1e1.tuxen.de/lore/crash_cows.html

We had a server that was failing intermittently at about the same time of day, around 3am. Looked like a power failure from the logs but there was no problems with other servers and this server was on a dedicated circuit that was power backed up and the server had a UPS attached.

So one of my team volunteered to stay and watch the server.

Around 3am, one of the custodians buzzes himself into the secure server room that has limited access, at the time only 3 of us on the IT team, our head of Regulatory and the CFO, were supposed to have access.

The custodian walks over to the server, says hi to Chris and proceeds to unplug the server’s UPS from the bright orange socket panel and plug in his vacuum cleaner. He then starts to vacuum the raised floor in our air filtered server room. The failure was intermittent because sometimes he finished vacuuming before the UPS ran out.

Apparently our facilities manager considered herself and her staff exempt from our corporate security policies. She also told the contract custodian to “just unplug something if they didn’t have the courtesy to leave you a free plug”.

In olden days i worked at a datacenter that had problems when work on the floor above included grinding (and creating some iron fillings all over the place). The tops of the dg computers below were not covered and the iron fillings caused all sorts of grief inside the computer itself.

On a rollout of new workstations for the local bank, which were moving into a nice, newly built, office building. On the trader floor, one of the workstations would not finish setup and would constantly reboot. And one of the (three! awesome back in the late '90s) monitors wouldn't work properly. Turned itself off and on all the time.

I said to a colleague that the power circuit was probably borked, off-spec and faulty somehow.

Since the building had just been put up, there was still a flurry of electricians and plumbers and painters and everything else inside trying to get everything ready over that weekend.

After my colleagues and others had tried figuring out the problem for a good time by trying everything else, I asked one of the passing electricians to get the circuit for that specific desk checked out.

First time I had right in the workplace by just deducing a cause from experience, as a fresh IT worker in a big company. There was indeed something wrong with the power circuit. Felt good. Never learned exactly what was wrong though. Bad cable perhaps.

Similar stories talk about the bits of wire floor scrubbing brushes getting sucked up into multi-million dollar computers in the 1960s.

https://minnie.tuhs.org/pipermail/tuhs/2023-January/027547.h... is also good.

I could listen to such stories all day. Any idea of where I can find more?