Yeah maybe the windows update changed your video card drivers.
I can tell by looking at the windows in your screenshot that Aero is not enabled.
Look at this screenshot, you can see that the borders of the windows are see-through, whereas yours are solid blue:
http://www.istartedsomething.com/wp-cont.../10/96.png
And also the X close button is different size and shape
I can tell by looking at the windows in your screenshot that Aero is not enabled.
Look at this screenshot, you can see that the borders of the windows are see-through, whereas yours are solid blue:
http://www.istartedsomething.com/wp-cont.../10/96.png
And also the X close button is different size and shape
