I just saw this thread and I've been experiencing the same problem with my G7. I went to a car show over the weekend and took about 40 pictures but only got about 30 CRW files. I'm pretty sure I didn't accidentally disable RAW mode with the shortcut.
Incidentally, I discovered a bug in the Allbest firmware, at least for the G7. No CRW files are generated if the flash is set to OFF. AUTO or ON are okay, though.
Doug