I don't know if it's just me. 1) I zoom-in into a document 2) I press the spacebar, then click-drag to navigate through my document 3) I let go of the mouse, and my document keeps scrolling in the direction that I've dragged. Any clues on what's causing this random movement? My mouse is on a typical mouse pad--no glass, no reflective surfaces. My mouse settings are: Tracking: Middle Scrolling: Fast Double-Click: Fast Secondart click: Right Scroll: with momentum Screen Zoom: Checked Swipt Left/Right to Navigate: Checked Thanks in advance.