My problem seems to be similar but it's driving me crazy. I am trying to copy photos from my Samsung Galaxy S 19000 to a PC. I have tried mass storage and Kies but I seem to have a problem with the computer accepting my phone is connected. The phone comes up with USB connected, I choose to 'mount' but there is no sign of the phone on the computer for me to access the photos!! :-(
Any help would be GREATLY received.