I've checked the owners also the results of ls -ld /var/lock/koha and ls -ld /var/lib/koha are drwxrwxrwx 3 koha koha 4096 Aug 20 09:14 /var/lock/koha and drwxrwxrwx 4 koha koha 4096 Jun 23 08:36 /var/lib/koha no way, also i've these in my zebra logs (koha-zebradaemon-output.log) 02:51:04-31/08 zebrasrv(21) [warn] ir_session (exception) 02:53:05-31/08 zebrasrv(22) [warn] ir_session (exception) 02:54:31-31/08 zebrasrv(23) [warn] ir_session (exception) 02:55:06-31/08 zebrasrv(24) [warn] ir_session (exception) 02:57:06-31/08 zebrasrv(25) [warn] ir_session (exception) 02:57:07-31/08 zebrasrv(26) [warn] ir_session (exception) 02:59:08-31/08 zebrasrv(27) [warn] ir_session (exception) and (koha-zebraqueue.err) 20140830 20:50:55 koha-zebraqueue-ctl-kohadb: client (pid 1868) killed by signal 15, stopping 20140830 21:43:30 koha-zebraqueue-ctl-kohadb: client (pid 20135) killed by signal 15, respawning 20140830 22:04:45 koha-zebraqueue-ctl-kohadb: client (pid 2694) killed by signal 15, stopping 20140831 02:59:25 koha-zebraqueue-ctl-kohadb: client (pid 4684) killed by signal 15, stopping 20140831 03:01:45 koha-zebraqueue-ctl-kohadb: client (pid 8833) killed by signal 15, stopping & my linux distribution (amazon EC2 instance) 64 bit PRETTY_NAME="Debian GNU/Linux 7 (wheezy)" NAME="Debian GNU/Linux" VERSION_ID="7" VERSION="7 (wheezy)" ID=debian also when running sudo update-rc.d koha-zebra-daemon defaults got me the following results /usr/share/koha/bin/migration_tools# sudo update-rc.d koha-zebra-daemon defaults update-rc.d: using dependency based boot sequencing insserv: warning: script 'K01zebraqueue-daemon' missing LSB tags and overrides insserv: script koha-zebra-daemon: service koha-zebra-daemon already provided! insserv: exiting now! update-rc.d: error: insserv rejected the script header thanks