The following ERRATA for SL 303 i386 are now available from:
ftp://ftp.scientificlinux.org/linux/scientific/30[1-3]/i386/errata/SL/RPMS/

[RHSA-2004:632-01] Updated samba packages fix security issues

  samba-3.0.7-1.3E.1.i386.rpm
  samba-client-3.0.7-1.3E.1.i386.rpm
  samba-common-3.0.7-1.3E.1.i386.rpm
  samba-swat-3.0.7-1.3E.1.i386.rpm

-Connie Sieh