I have a Koha instance running 23.11. We have not gone live with it yet but when testing overdue notices it has locked up several times when I check in books after there has been no use for several hours. It will not respond and I have to end up having to reboot the whole server. It then will allow me to check out and in books and works fine. Any suggestions on what to check? Thanks, -- *Paul Dokken* Information and Digital Technology System Administrator PO Box 248, Waxhaw, NC 28173 | jaars.org (c) 803.235.6861 | paul.dokken@jaars.org JUNGLE AVIATION AND RELAY SERVICE At JAARS, we commit to: Seek God Above All | Serve in Love | Act with Integrity | Steward God's Resources with Courage | Pursue Excellence | Collaborate with Respect | Create a Culture of Innovation