Sometimes, a new firmware release means new functions added to the camera. Here, with Canon, the firmware update is a simple bug fix but a necessary one. This new version (V1.0.9) fixes the playback issue after continuous shooting and the exposure problem when used in auto mode and with the bracketing function.
You may download the new Canon EOS 450D / EOS XSi firmware version 1.0.9 here : http://web.canon.jp/imaging/eosd/firm-e/eosdigital4/firmware.html
