Hello. I have the motherboard of my SR MBP replaced recently. I followed the instructions on http://www.macosxhints.com/article.phpstory=20080128003716101 but it did not work out. I tried to create a completely new backup but the 1G HD does not have enough disk space anymore. It seems that it is better to use SuperDuper to backup the MBPs for the following reasons: 1. If you have a firewire drive, you can restore the content of the entire disk easily. 2. It works even the motherboard has been replaced. This is good especially for those who have the SR MBP with defective GPU. 3. I am not sure how it works but it seems that when the Time Machine backup drive is almost full, TM asks the user for permission to delete older backups. Some of the important stuffs may be deleted accidently. Is this possible? Supposing that I have backup_on_Jan_2009, backup_on_Feb_2009, ..., backup_on_April_2010. As far as I understand, TM does incremental backup. Assuming that I have added and deleted folders throughout the year. If I allow TM to delete earlier backups, will some of the files be deleted unexpectedly? Any comments/suggestions are appreciated.