I can't stand the mouse. I've since connected my Logitech Wave keyboard and mouse, and it works.
Thank goodness for that.
I must say, this iMac seems slower than my MacBook Pro! It must be the hard drive causing that, surely.
My MacBook has a 128GB SSD, where as the iMac is a 1TB SATA; not even Fusion. But, the processor is a 3.2 GHz, i5. So, I don't get it...