I have a lovely new Panasonic LX5, replacing my LX3. I am using the same SD card as in the LX3, which already has the folders 100, 101, 102, ... 116 (yes, that was a thousand photos per folder...). ...
This may be a Panasonic-specific question. My camera is a DMC-FT2. On the memory card, apart from the JPG files a lot of other file types can be found. Do you know what they contain and what they are ...