The newest version of Visual Similarity Duplicate Image Finder solves some Windows Vista compatibility issues. It is also optimized for scans that include huge amount of images - 100 000 and more. The version adds a fix for the MD5 scanning issue. You can read more about the features of the product here and download Visual Similarity Duplicate Image Finder 1.8.0.4 here.
Version 1.8.0.4: