ive tried x64 vista and 7 drivers still happens. it happens on wc3 dota when i play. only game i use them for. using the bottom 2 buttons below the scroll wheel.
I also am having the problem with the programable buttons on the mouse. They don't work at all. I see that on the Logitech site there more people with the same problem and Logitech isnt responding to the Problems these people have.
I guess I need to look for a new mouse unless someone knows how to fix the problem.