looks like these do need to be enabled, hanging on pending sessions:
debug: pending: session: 0x4181d180, handle: 0x0
debug: selecting: inbound , read: sockfd: 1, popfd: 1, write: sockfd: 0
debug: select: 1, read: sockfd: 1, popfd: 0, write: sockfd: 0
debug: pending: session: 0x4181d180, handle: 0x0
debug: selecting: inbound , read: sockfd: 1, popfd: 1, write: sockfd: 0