[fnordprefect]

I don't think so, on my anecdatum.

I've also had mine since early November last year, and also use them many hours a day, mostly at my desk. Never dropped. Either left on desk in case or carried in a trouser pocket with nothing else except my iPhone.

They were absolutely perfect until about ~6 weeks ago, when the right bud started to make an awful tinny noise (which I thought was imperfect cancellation, and a software bug of some kind) when I coughed, which it had never done before.

Yesterday, I started getting the rattling sound when walking, right earbud only. Goes away for a couple of steps if you take it out and reseat it, then comes straight back. Rattles in time with footstep.

Since it's an impulse thing for me (force of cough, force of bouncing when walking), I'm guessing defective connection (defective solder joint?) that is misbehaving when stressed?