Hello, I have work on the Acer laptop in the last 5 years. There is no problem occurred in the laptop. I have installed the windows 7 operating system on the laptop. I have cared this laptop by the internet viruses using the antivirus and firewall system. Now the problem is not in the laptop. I use the Logitech LX7 optical mouse for easily handling this laptop. I bought this mouse in the last year. There is some problem occurred in this optical mouse. When I try to open some file by double click on that file then the file does not open. Can somebody explain why the mouse double click operation is not worked?