My Mozy back up just finished. Total backed up was 49 GB and it took five working days (I turned the computer off in the evening and probably could have shaved some time off had I let it run overnight). I did find out that you have to specify for Mozy to backup XMP files; it will not do it automatically as it requires explicit file extensions in the rule. I thought something was funny when I didn't see any XMP files going through the back up process (they only take about 5-10 seconds) and the on-line help led me to the answer. I hope that I don't need to do a back up because of a crash (as I have two redundant external drives the only case of needing Mozy would be a home fire/flood/theft, etc.).