Hello all. I used to think these things didn't happen when using a Mac, but it really bothers me when I want to scroll up or down a page and weird things happen. It doesn't happen all the times, but most of the times it does. Look at the images and you'll see what happens to my computer. There are basically two things that happen. Again, see the images. It's not a problem of the program I'm using, since it happens with every single program (including Safari). What's going on?? Does anyone else have the same problem?? Thanks!