Is anyone have trouble saving files? When I attached a media card, either directly using an SD card or with a USB device for a CF card and drag the files to a folder on the desktop (or even on an external drive) it appears that there is a transfer, but then the files are no where to be found .... going to go to the Apple Store, but wanted to see if anyone else has had this issue. This is happening in two different computers that I have upgraded.