freezer not as cold as it used to be
We have a six year old Frigidaire side by side fridge/freezer (with water/ice in door and icemaker). Over the last few days the freezer is warmer than it used to be. Things are starting to be less "frozen" than before (like ice cream is softer now). The refrigerator side still seems fine, temperature-wise, which seems odd to me.
About 12 hours ago I turned down the temperature a notch on the freezer control, and that might help the problem, although it hasn't helped yet.
My main concern is that "something" changed that caused this to happen, and I'd like to hear ideas on what that might be, and suggestions to reverse the situation, if at all possible. For what it's worth, it is warm here, but not all that warm. Our kitchen has remained at a comfortable temperature.