Do you use mouse gesture programs such as StrokeIt or do such gestures only make it harder to use the computer? In old Windows, for example, in Windows 98 there were sound goodies that the drop-down menu and maximizing the window and minimizing the window made sounds and these sounds only interfered with the use of the computer and in newer Windows these sounds were withdrawn by default. Could it be that someone accidentally moves the mouse pointer and the program detects a mouse gesture and performs it?