Weird graphics problem

All of a sudden my PC has developed this weird graphics problem. When I have certain things on the screen, everything gets this bluish tint and the window enlarges horizontally so that the File menu on the left and the X to close the program are off the screen. The scroll bar is missing too. Even the window itself gets this strange, darker hue. Here's an example: I logged onto the Tom's Hardware website and the home page looks fine. When I click to the the Tom's Hardware Community page the problem happens. If I go back to the home page it's fine again. The only difference I see between the two pages is the Community page has a darker background. It also happens when I try photo editing. What's really weird is, if I have one of these windows open for more than a few minutes the problem will still be there and when I close it and I'm looking at the desktop. Also, the more these offending screens are up, the more the problem bleeds over to windows that were previously okay and the dark and wider the screen gets. It's like something out of a horror movie. I think the whole thing started after I installed Sid Meir's Pirates! the other day. I'm pretty sure it also installed DirectX 9.0c. I'm wondering if this could be the problem. My graphics card is an ATI 9500 Pro with Omega driver 2.5.58. As I type this I'm downloading 2.5.59.