Sky too bright at horizon

Is this normal? The sky appears WAY too bright and white at the horizon. Re-installing all the original textures didn't work. I dunno what to do next. Even the clouds appear completely blended in with the horizon, revealing no detail. I uninstalled that "SweetFX" thing; didn't work. Still too bright.

Any ideas how to fix it, and go back to the bland blue noon-time horizon?

Any ideas how to fix it, and go back to the bland blue noon-time horizon?