I can confirm this too on an amd64 system. Rebuilding package from source makes the mod_vroot plugin working. I suggest to rebuild the package for the next Wheezy dot-release. It is really sad to see that this is not fixes since Wed, 10 Jul 2013, because it's so simple to fix.
Config: DebugLevel 10 DefaultRoot /srv/ftp <IfModule mod_vroot.c> VRootEngine on VRootOptions allowSymlinks VRootLog /var/log/proftpd/vroot.log VRootAlias /tmp/xyz/test3 test3 </IfModule> The daemon segfaults with the original Debian package 0.9.2-2+b2. Aug 27 23:15:55 dhcppc3 proftpd[25055]: 127.0.1.1 - ProFTPD 1.3.4a (maint) (built Sat Sep 28 2013 19:26:56 UTC) standalone mode STARTUP Aug 27 23:15:59 dhcppc3 proftpd[25060]: 127.0.1.1 (192.168.178.51[192.168.178.51]) - FTP session opened. Aug 27 23:15:59 dhcppc3 proftpd[25060]: 127.0.1.1 (192.168.178.51[192.168.178.51]) - mod_wrap/1.2.4: using access files: /etc/hosts.allow, /et$ Aug 27 23:15:59 dhcppc3 proftpd[25060]: 127.0.1.1 (192.168.178.51[192.168.178.51]) - mod_wrap/1.2.4: allowed connection from ::ffff:192.168.17$ Aug 27 23:15:59 dhcppc3 proftpd: pam_unix(proftpd:session): session opened for user test by (uid=0) Aug 27 23:15:59 dhcppc3 proftpd[25060]: 127.0.1.1 (192.168.178.51[192.168.178.51]) - Preparing to chroot to directory '/srv/ftp' Aug 27 23:15:59 dhcppc3 proftpd[25060]: 127.0.1.1 (192.168.178.51[192.168.178.51]) - ProFTPD terminating (signal 11) Aug 27 23:15:59 dhcppc3 proftpd: pam_unix(proftpd:session): session closed for user test Aug 27 23:15:59 dhcppc3 proftpd[25060]: 127.0.1.1 (192.168.178.51[192.168.178.51]) - FTP session closed. Aug 27 23:16:04 dhcppc3 proftpd[25067]: 127.0.1.1 (192.168.178.51[192.168.178.51]) - FTP session opened. Rebuilding the package from the original Debian sources proftpd-mod-vroot_0.9.2-2.dsc proftpd-mod-vroot_0.9.2.orig.tar.gz proftpd-mod-vroot_0.9.2-2.debian.tar.gz fixes the problem. Regards Volker Theile