Well, I've not been too worried, having owned Mac laptops for the past ten years, I am used to these temperatures. Indeed on this apple support thread the temps seem similar to mine.
When it gets hot, the fans pick up, when I did the above screen shot I was encoding music to iTunes, and had been for some time, so that might be some of the heat issue, my mini is also installed on a low shelf beneath my desk, so isn't ideal for airflow. But as I say, I don't see reason to be too concerned. I shall be keeping an eye on it though, so thanks for your comments
FYI I found this app to help monitor temps.
When it gets hot, the fans pick up, when I did the above screen shot I was encoding music to iTunes, and had been for some time, so that might be some of the heat issue, my mini is also installed on a low shelf beneath my desk, so isn't ideal for airflow. But as I say, I don't see reason to be too concerned. I shall be keeping an eye on it though, so thanks for your comments
FYI I found this app to help monitor temps.