I have an Intel iMac and a V470 Logitec mouse. I installed LCC when I bought the mouse around 6 months ago. The mouse stopped working today and after a quick check I realized that my version of LCC was not supported in Leopard. I checked out the Logitec website and managed to de-install LCC. There was also an article on the website that suggested you don't need to use LCC with OSX. I have set the mouse up without LCC and it works fine now. My question is... why install LCC in the first place ? I see on this forum many people have had issues with it anyway.