I'm having the same issue. It started shortly after getting the mouse, and has been getting progressively worse. I just tried spinning the wheel quickly, and it does seem to have helped a lot.
It seems to me like maybe a problem with dirt on the actual optical sensor or the disc it reads, both of which are inaccessible without disassembling the mouse. (At least, I assume that, like most mice, the wheel is read via a toothed or marked disc inside the mouse, that turns through a basic optical sensor -- so I'm not sure what good cleaning the sides of the wheel itself would do, though if I'm wrong, I'd love to know how this one actually works! :D )
Also, it seems a bit disingenuous to me, to say that it's not a common or rampant problem, when people have posted about themselves and a family member having the same issue, or about having the same issue with multiple replacements. Statistically, if it's just a manufacturing defect, assuming you're following anything remotely close to Six Sigma (which I assume you are), that's basically impossible. Call it improbable to the point of absurdity.
Also, I'm not sure obtaining samples of mice that are doing it consistently will help. If it is a problem with dirt or dust getting into the sensor apparatus, the jostling during shipping may well solve the problem, temporarily at least.
Interestingly, I just tried changing the report rate to 2ms instead of 1, and it seems to have solved the problem completely (albeit for about 2 minutes so far). Could it just be an issue of the wheel being read too often, and getting twitchy due to microscopic movements?
Has anyone else with this issue tried a slower report speed?
Edit: So lowering the report frequency seems to have completely fixed the problem. I get no noticeable degradation in mouse performance either, so for now, this is going to be my recommended workaround.
Would it be possible to update the firmware to lower the report frequency just for the wheel? Or does the whole mouse have to be on the same frequency?
Last edited by FirroSeranel; 05-20-2013 at 02:49 PM.
Reason: Added new information.