Is there a hair in the laser part under the mouse?
Ignoring the clicking, erratic movement can all be explained by thing like a small hair or dust in the laser.
Or do you mean the trackpad?
In which case it can be explained by a loose connection to the mainboard. Easily explained by being knocked during shippnig. You may be able to service that yourself, but most likely it's a genius bar visit for you.
Is there a hair in the laser part under the mouse?
Ignoring the clicking, erratic movement can all be explained by thing like a small hair or dust in the laser.
Or do you mean the trackpad?
In which case it can be explained by a loose connection to the mainboard. Easily explained by being knocked during shippnig. You may be able to service that yourself, but most likely it's a genius bar visit for you.