In the 40D, the number of pics left before filling up buffer is displayed in the viewfinder on the very right of the green digits. When I got the camera, it displayed 75, if I had the settings right (ISO) or if my ISO was different, it'd be 60 in the buffer... but no biggie...that's cause of file sizes. Anyhow, now I can only get the 60-75 to show if I am under "ACTION" (the guy running) auto mode. Or, if I'm under a custom preset. If I am in Tv mode, which I shoot in at the races, I can't get a buffer of more than 6. Any ideas????