When I connect my camera to a USB port I get the following message, "the disk you inserted was not readable by this computer". This started after I upgraded to Snow Leopard and to iPoto '09. I currently have OS X (10.6.4) and iPhoto 09 (8.1.2).
Intel Mac Pro, Mac OS X (10.6.4), iPhoto 09 (8.12)
The camera is a Panasonic DMC-FX33. Yes, the camera and the SD card successfully connected to iPhoto before. Before I upgraded to Snow Leopard and to iPhoto '09. Yes, there are photos on the SD card. Yes, I have already tried a SD card read, and got the same message.