Comment 25 for bug 1016895

The package in -proposed seems to have resolved the 'sys_setgroups failed' issue for me as well.

3.5.0-23-generic #35~precise1-Ubuntu SMP Fri Jan 25 17:15:33 UTC 2013 i686 i686 i386 GNU/Linux

Package: samba
Status: install ok installed
Priority: optional
Section: net
Installed-Size: 22380
Maintainer: Ubuntu Developers <email address hidden>
Architecture: i386
Version: 2:3.6.3-2ubuntu2.4
Replaces: samba-common (<= 2.0.5a-2)
Depends: samba-common (= 2:3.6.3-2ubuntu2.4), libwbclient0 (= 2:3.6.3-2ubuntu2.4), libacl1 (>= 2.2.51-5), libattr1 (>= 1:2.4.46-5), libc6 (>= 2.15), libcap2 (>= 2.10), libcomerr2 (>= 1.01), libcups2 (>= 1.4.0), libgssapi-krb5-2 (>= 1.10+dfsg~), libk5crypto3 (>= 1.6.dfsg.2), libkrb5-3 (>= 1.10+dfsg~), libldap-2.4-2 (>= 2.4.7), libpam0g (>= 0.99.7.1), libpopt0 (>= 1.14), libtalloc2 (>= 2.0.4~git20101213), libtdb1 (>= 1.2.7+git20101214), zlib1g (>= 1:1.1.4), debconf (>= 0.5) | debconf-2.0, upstart-job, libpam-runtime (>= 1.0.1-11), libpam-modules, lsb-base (>= 3.2-13), procps, update-inetd, adduser, samba-common-bin