Please make sure you don't install other packages from that PPA, just the samba ones. You can either enable the PPA, install the samba packages only, then disable the PPA, or manually download the packages using the following link:
https://launchpad.net/~ubuntu-security-proposed/+archive/ubuntu/ppa/+sourcepub/11253699/+listing-archive-extra
Please make sure you don't install other packages from that PPA, just the samba ones.
You can either enable the PPA, install the samba packages only, then disable the PPA, or manually download the packages using the following link:
https:/ /launchpad. net/~ubuntu- security- proposed/ +archive/ ubuntu/ ppa/+sourcepub/ 11253699/ +listing- archive- extra