I have two recurring issues, and I wonder whether they are related. First, my browser periodically will just disappear. I understand that sometimes by scrolling down the "show desktop" button on the lower right corner of the screen can get touched which will hide the browser but this will happen when I'm not even near the scroll bar, and when I doublecheck the "show desktop" button just to see if my browsing page will reappear it does not. I think my disappearing browser is unrelated to any inadvertent hitting of the "show desktop" button. Second, I often have two or three tabs open, and out of the blue will get the warning message that I am about to close multiple tabs even when I was not attempting to close anything, and I was nowhere near the x-out button on the upper right corner of the screen. I'd appreciate any insight that folks may have with respect to either or both of these issues. My gut tells me they're probably related but I wouldn't know. I've done multiple virus scans with trend micro and malwarebytes with negative results.