Yes, its exported for sRGB and the display driver is set for 32 bit color-depth.
I did not resize the image for the display. Th actual size of the image is much large than the display and so I though that it would not be necessary. In fact the appearance improves if I resize the image to a lower resolution. This is counter-intuitive for me. I would have expect the hi res image to be better.
Another wierd thing, is that it only happens when I use it as my desktop background. If I open the image in another viewer it looks fine.
I am missing something.