Unibody Nvidia + Photoshop CS4 OpenGL bug?

I am experiencing a particular bug in Photoshop CS4 Extended which is related to the OpenGL GPU acceleration which is very dependent on the video driver. The particular bug I'm seeing is when I free transform a object/layer or perform a transform selection the transformed object/layer/selection is off by a pixel and that pixel is semi-transparent with whatever is being transformed.

Can anybody with both a unibody and Photoshop CS4 test this on their system to see if its really an issue with the driver or if it is something with my Photoshop installation?

Here's what I do to test. 1. creat a new doc at any size/ppi. 2. drag out a selection and fill with a solid color. 3. free transform object/selection. 4. zoom in on transformed object and look at the edges to see if there is this feathered/semi-transparent edge.

I haven't tested in bootcamp since I don't have a Win version of CS4.

Thanks.