Mounting CIFS/SMB in fstab fails with “CIFS VFS: No username specified” in syslog

So you have a line in your /etc/fstab like:

//drobo-2.dynhost.lala.com.au/nsbackup  /mnt/nsbackup  cifs  credentials=/root/.smbcredentials,noauto  0  0

and /root/.smbcredentials contains

user=username
password=pass

and you see the error above in your syslog? Try installing the package cifs-utils!