I am using XP - firefox. Just installed plug in Piclens which is great but having problems scrolling now. There site gave these instructions but I can't find mouse control panel. Can anyone help? Thanks Unsual peformance issues with a Logitech mouse Apparently, the LogiTech mouse interprets Firefox plus Piclens as a game, and thus kicks in the "disable acceleration in games" function. Solution: (1) Go to your Logitech mouse control panel and then (2) disable the option which reads "Disable acceleration in games." This can be found in the "Motion" section, under "cursor speed and acceleration" preferences.