http://www.canon.co.jp/Imaging/eosdigital/E3kr_firmware-e.html
EOS DIGITAL REBEL/EOS 300D DIGITAL Firmware Version 1.1.1 resolves the following issues:
1. It increases the reliability of RemoteCapture application when the camera is used.
2. It increases the reliability of operations when used on Windows XP and Mac OS X with [PTP] selected in [Communication].