Hi: This is a problem that started to show a few weeks ago. When my laptop returns from hibernation or sleep, the mouse pointer disappears. You can still move the mouse and you know when it goes to an area on the screen by the effect it causes, but the arrow is invisible. Now, by sheer luck I found out that by pressing F4 I can make it appear again, but I want to know if this is a problem or a bug in the OS. Please, advise.