sbackup no gui is only in sid.
Debian -- Package Search Results -- sbackup -
http://packages.debian.org/search?ke...searchon=names
Other methods/packages:
rsync - fast, versatile, remote (and local) file-copying tool
rdiff-backup - remote incremental backup
pybackpack - user friendly file backup tool for GNOME
luckybackup - rsync-based GUI data backup utility
kbackup - Easy to use backup program
backuppc - high-performance, enterprise-grade system for backing up PCs
backintime-gnome - GNOME front-end for backintime
backintime-kde - KDE front-end for backintime
backup-manager - command-line backup tool
BackupAndRecovery - Debian Wiki -
http://wiki.debian.org/BackupAndRecovery
Debian Linux Backup - Tutorials and articles -
http://www.debianhelp.co.uk/backup.htm