It's newish, about 6 months old. It was fine when I first got it but it has got progressively warmer and is almost too hot to touch by the fan outlet now.
I use it every day in a variety of locations around the house. The fan is at the side, though there seem to be some smaller vents underneath it. I try not to put it on surfaces which might stifle it (like cushions) but I do like to have it on my lap sometimes.
I vaguely remember reading something about fans getting dusty and not working properly, is there anything I can do?