>As I've said before, the ideal surface is one that has strong/distinct (high contrast), random features that can be tracked by the mouse optics. Black is not a great colour because it absorbs light, so it's absorbing the LED illumination and in photographic terms the images it's taking are underexposed.
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>You probably want a black desk surface for decor reasons. That's fine, just get a mouse pad with a better surface.
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>Some other things to check or watch out for:
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>- Some mouse pads have a soft surface. They are basically a stretch fabric like Spandex over neoprene. These are bad for both optical and mechanical mice because as you press down to register a click, the surface gives, and the mouse interprets this as motion. In Windows a click won't register if the mouse pointer is moving during the click.
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>- A weak battery in the mouse. Also, if you have replaced alkaline batteries with rechargeables. Alkalines are 1.5v, common rechargeable NiMH are 1.2V which may not be enough for the mouse circuitry.
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>- Make sure the drivers are updated, and exactly correct for the make/model of mouse. I've seen lots of cases where a Logitech mouse is hooked up to a computer that's using MS drivers. It mostly works fine but extra buttons may not work at all, or as expected
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>- Maybe the mouse is bad. Super-cheap Asian mice are sometimes spotty quality (especially if they're using super-cheap Asian batteries). If you're using a MS or Logitech mouse, is it real or a knockoff?
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>- Can you test with a wired optical USB mouse? That would help determine if various mouse surfaces are OK. You can have 2 or more mice plugged into the same computer simultaneously with no problems.

The laptop, next to it, is also using a Logitech mouse. That one is a model G5. It is a regular non wireless mouse. I never had a problem with that. That seems to indicate that the surface is ok. As far as the batteries go, as I said, there aren't any in it as this is a rechargeable mouse. I have to buy another wireless kit for the laptop. So, with the new one, I will see if that is also sensitive.

I see that the current drivers are the default, which is from Windows. So, I will try to find something recent on the Internet. Those drives are dated from 2006.