Xfree strange problem Nvidia/refresh

[fabiano <fabiano panther infinito it>]

I had problem with poor refresh and image quality.I have checked Monitor 
configuration, but after days I have seen that my xorg.conf "nvidia" 
driver was changed in "nv".
I don't know how or who(application) has changed this configuration.
Take an eye on this, if you have problem with Nvidia drivers , check 
first for xorg.conf configuration files...perhaps your plblem is similar.
Now I have solved.I Hope  it is useful
Cheers