[scottishrogue]

You are correct that it is a sign that the humidity is too low, but that is more likely to happen during the winter months. While filing the ends is fairly easy (assuming you have tools), if the guitar is new, it would be good to have the entire guitar checked by a qualified tech. It might need to be humidified, or there could be something else going on with the frets, as well. You might start by putting it in the case with a case humidifier for a week or so, to make sure you have the neck (and body) properly humidified. If that doesn't correct the issue, it would be advisable to have it checked by a tech.

Glen