my G5 makes a odd whining noise that appears like it's coming from the back of the computer, towards the bottom. It's high pitched, so some older people and those with bad hearing would probably not be able to hear it. However, i can loud and clear. I hear it more when there are animations on the screen, like the opening of dashboard, or minimizing a window, or even when the screen saver is running. I have no clue what it could be, nor is it a big deal, but I was wondering if anyone else is having this issue and if they were able to fix it.