Optical Mouse Problem

Hi Everyone,

Everytime I release my left mouse button after peroforming a click and drag action, the mouse is “sticking”. In other words, say, when I select a line of text by clicking and dragging, and when I release the left mouse button, it appears as if the click and drag action is still not completed, even though the mouse button is released. After that, When i move my mouse on the page without clicking, it continues to select more text in the page. Can someone help me? I dint install any new software… I remember changing the mouse sensitivity a couple of weeks back and there started the problem.