It looks like Canon has come up with a fix for the problems I mentioned last week which could cause you to lose images that were in the camera’s buffer. Some of the fixes are also focused on fixing an underexposure problem with the EOS 350D. If you have one of the following cameras, then visit Canon’s web site to download the update:
EOS 350D
EOS-1D Mark II
EOS-1Ds Mark II
via DPReview