Not more then a month ago i bought the late 2009 iMac 3.06GHz that comes with a Blue mouse and keyboard. Within a couple of days i purchased a USB full keyboard because the Blue keyboard has no side bar number keys. Now i am within hours of throwing away my Blue mouse. One gripe is that this mouse eats batteries for breakfast. I use duracell batteries and they are nearly dead within a couple of weeks. Also, the pointer action is very eradict: for example as i type the pointer just jumps and the a page just scrols down or up without my touching the mouse. Are you happy with your Bluetooth mouse ?