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« on: February 05, 2015, 03:09 PM »
I'd be willing to bet it's more of a problem with ergonomic mice than any other kind. In fact, I'm not sure I've had the problem with anything else. While that narrows it down to Logitech mice for me, I've never seen it with any of the plain OEM Logitech units I've used - some for long periods of time.
After performing autopsies on a number of mice, mostly after fatal button problems, here's my hypothesis about why that is. The moving parts in a high end ergonomic mouse are not significantly higher quality than the ones on basic mice. In fact, in the case of the electronic moving parts like buttons, I'd say they're generally identical. However, the physics involved as significantly more stressful because of the distances and angles involved. That would explain why these physical problems primarily affect the main buttons, as well as more advanced features like tilting scroll wheels.