By the way, it is similar with the icon used in the forums main page, for instance for this forum "Feedback".
Favicon:
Forum icon:
Logo:
It might have been deliberate, but it is ugly once you notice (and I'm surprised I didn't notice before). It's not the same version of the thingy, but you can tell the aspect is not right because the wheel is not a circle, but an ellipse (a vertical ellipse could be justified by perspective, but not a horizontal one).