Just noticed this in syslog and found this bug. Seems to be benign on mate for me at any rate.
lsb-release: DISTRIB_ID=Ubuntu DISTRIB_RELEASE=15.10 DISTRIB_CODENAME=wily DISTRIB_DESCRIPTION="Ubuntu 15.10" syslog: mate-screensaver-dialog: pam_ecryptfs: seteuid error ** Also affects: ubuntu-mate Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1085706 Title: pam_ecryptfs: seteuid error To manage notifications about this bug go to: https://bugs.launchpad.net/ecryptfs/+bug/1085706/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs