Don't want to sound like a jerk but I never use a usb cable to download photos from a camera. I pull the SD card from the camera, use a split screen in dolphin, one side is /home/Photos, the other side is the SD card.
I'll then create a new "Dated Folder" (in the /Home/Photo directory I created), and copy them that way. After I'm sure the copy went smoothly, Ill delete the photos from the SD card.
I just find it easier doing it this way, IMHO.