I have a mouse problem that I have never come across. When on the desktop or in some applications such as Microsoft Outlook 2003, the left click acts like a right click and the right click is dead. When in other applications like Internet Explorer it's fine. In other windows (like pop-ups - task manager) the mouse doesn't work at all. I have rebooted several times and even switched the mouse to one that I use on another PC that definitely works. I am running Windows XP Professional. Any advice? Does this sound like a setting one of my children might have changed or some sort spyware/virus? Any help would be very appreciated.