I'm using Digikam to manage my pictures. There are currently more than 32000 pictures to handle. While Digikam 1.2 brought some great performance increases, but the import of new images is driving me crazy. I don't know since when the import ist that slow, but currently a 12 MP image needs 8 seconds to import when it is horizontal. When Digikam needs to rotate it during import because it is a vertically aligned image, then it needs approximately 20 seconds for each image to import.
Funny enough the larger NEF files are imported within a fraction of a second.
I don't know whether this is a Digikam issue or those of a related library or such, but it's really, really annoying when you shot a bunch of fotos and need hours to import them.
Mark Purcell points at a libexiv2 bugreport: #579835