If you start seeing these errors in Samba, when you are not using it to share printers.
[2006/08/08 12:59:00, 0] printing/pcap.c:pcap_cache_reload(159)
Unable to open printcap file /etc/printcap for read!
You can resolve this by adding these lines to the Samba configuration file. [global]
printcap name = /dev/null
load printers = no
printing = bsd