Total waste of time. This version is not compatible with the 1.2.8 version. So you cannot write backups to a server running the older version.
Best backup software I've used. Unencrypted mirrors, reverse incrementals, minimized disk usage, and extremely efficient bandwidth usage. However, no gui. Backups take less disk space and bandwidth than rsync, but more CPU so it might be slower. Use rsync if you are CPU bound and have plenty of storage space. Also check out duplicity if you need encryption.