1. It will use the partition containing /home, and if it doesn't have room (more free space than most of the filesystem combined) your system will appear to lock as it pages and thrashes at 100% disk usage on that partition.

2. It temporarily changes the UIDs so they are all under 1000 - required for "live" CDs - so you will lose permissions to your own files (if you open a new window) and created files will be wrong UIDs when restored.  There is a passwdrestore file left in /home/remastersys that needs to be run, or you will have to reedit the /etc/passwd file.

I would suggest copying the /etc/passwd file to back it up.

There also appears to be NO method where the /home/remastersys can be redirected (e.g. symlink) or have remastersys use a drive with lots of space, so you can't really use it for a live backup unless you have the extra space in /home.

If anyone has a way around this I'd appreciate a post.