Originally posted by hkfnstang
I am not familiar with logitech mouse, but did you use a custom logitech software to do your setting? or in the OS control panel/mouse? maybe you have to set both to work?
sorry I can't be much help.
I have a feeling that you have hit the problem right on. I am using the logitech software, but I think it is integrated "over" the os control.
I go to start -> control panel -> mouse and simply hit "ok" and the thumb button gets set back to double click. I think that this is the logitech menu setting its own settings whereas the OS one hasn't been set to double click and is just setting it to the default "go back" at start.