It seems to be something related with how the program renders the pictures because I have had this same problem with other softwares, but not with all. Picturenaut or Photomatix render pictures correctly as well as Photoshop or any other photo editing software.
My graphics card is a Nvidia Gforce 6800XT with latest drivers running under Windows XP64.
EDIT: tested again latest Photomatix and it displays correctly when loading pictures but then when entering into tonemapping process same problem as SNS appears. Could this be something related to how the software handles the pictures at tonemapping stage?
