Using CLI to save snapshot to smbfs returns errors

I have been using BIT successfully (?) for a while now doing manual backups. Wanting to schedule backups with crontab I recently tried taking a snapshot via CLI (normally I just launch the GUI) to make sure everything works OK. "backintime -b" returns this:

Back In Time
Version: 0.9.26

Back In Time comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions; type `backintime --license' for details.

GConf Error: Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to a system crash. See http://projects.gnome.org/gconf/ for information. (Details - 1: Failed to get connection to session: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.)
INFO: Lock
INFO: Include folders: ['/home/johan', '/etc', '/root']
INFO: Ignore folders: []
INFO: Last snapshots: {}
INFO: [GnomePlugin.Systray.run]
INFO: [GnomePlugin.Systray.run] begin loop
INFO: Compare with old snapshot: 20100926-165143
rsync: get_xattr_names: llistxattr("etc/blkid.tab",1024) failed: No such file or directory (2)
rsync: get_xattr_names: llistxattr("etc/printcap",1024) failed: No such file or directory (2)
rsync: get_xattr_names: llistxattr("etc/X11/X",1024) failed: No such file or directory (2)
rsync: get_xattr_names: llistxattr("etc/X11/xinit/xinput.d/all_ALL",1024) failed: No such file or directory (2)
rsync: get_xattr_names: llistxattr("etc/X11/xinit/xinput.d/ja_JP",1024) failed: No such file or directory (2)
rsync: get_xattr_names: llistxattr("etc/X11/xinit/xinput.d/ko_KR",1024) failed: No such file or directory (2)
rsync: get_xattr_names: llistxattr("etc/X11/xinit/xinput.d/lo_TH",1024) failed: No such file or directory (2)

I am guessing this means that there is a problem related to permissions? I am using Ubuntu 10.04 and saving snapshots to a smbfs-mount with this added to /etc/fstab:
//192.168.0.2/mando /media/mando smbfs rw,user,username=johan,password=johan,uid=1000,gid=1000 0 0