I didn't really know where to post this, I hope I picked the right category.

I have a Dell Inspiron 1501 laptop. It's totally awesome, but lately I've been browsing websites with white backgrounds and can see this one little pixel on the screen that is brighter than the white background. However, when I put something black over the pixel, it doesn't show up....it just looks normal.

So basically what we have here is a pixel that only shows up on white surfaces abnormally, but on any other colored background it's perfectly normal?

Any help with this weird issue would be greatly appreciated....