I can confirm this Error:
new install everything active except the following firewall, mail filter, traffic shaping, DHCP, Proxy....
Mar 15 07:20:01 nx-pdc slapd[XXX]: connection_read(XX): no connection!
Mar 15 07:20:01 nx-pdc slapd[XXX]: connection_read(XX): no connection!
Mar 15 07:20:01 nx-pdc slapd[XXX]: connection_read(XX): no connection!
Mar 15 07:20:02 nx-pdc last message repeated 5 times
I'll poke around a bit on the Internet and see what I turn up if I have time, I will throw a bug report in later today or tomorrow.