Hi, I mapped the "use-item" key and the "lantern" key to two of my mouse buttons, but for some reason they don't always work. Often pressing the Lantern button will "use" the current inventory item instead of turning on the lantern. Even worse is sometimes when I press the use-item button, the lamp turns on instead (with often comical results). This doesn't happen on the keyboard, only with my mouse buttons. It's like there is an occasional conflict with the mouse driver.