Thanks larryi, I do indeed always keep my turntable arm unlocked for those reasons.
mulveling
That's what I figured.
As to the cleaning lady....
When I made my big turntable upgrade it was from my old micro seiki (donated by my father in law) to an expensive (second hand) Transrotor Fat Bob S, Acoustic Solid arm, and the Benz Micro Ebony L cartridge. (The cartridge was essentially new, worth thousands).
I spent a month or so specially re-constructing my equipment rack to handle the turntable, including an elaborate isolation shelf. The turntable sitting in it's box while doing so. Finally after all that effort I was able to play a bit of a record, just before getting out the door for a family vacation. It sounded great and I couldn't wait to get back and play my new expensive toy!
Well, we got back, I went to cue up a record and...WTF? Somehow the whole cartridge was twisted almost all the way sideways! I was utterly horrified and baffled. How?
Then I remembered: Maybe the cleaning lady decided to come while we were gone. I phoned her. Sher enough when I politely inquired she said "Oh yes, I came and did your house. There was that big new shiny thing. I was cleaning around it and heard a big bang noise. Then I noticed the long straight thing was hanging down (arm). So I put it back up. I hope it's ok?"
Yeah...her cloth had snagged the cartridge. Luckily it wasn't by the needle. Ultimately I was able to get it back working again (though I think she did something permanent to the arm).
It's amazing how many cleaning women horror stories there are regarding turntables. Makes an electric fence seem like a plausible investment :-)

