samba - Sep 1999 - Log Error Msg

I've noticed since the 2.0.5a upgrade, the log file contains entries like:

	nickname authorization failed

I have samba configured as an open system:
	workgroup = Home
	hosts allow = 192.168.0. 127.	
	null passwords = yes
	security = share
	local master = yes
	domain master = yes
	preferred master = yes
	dns proxy = no
	wins support = no

Funny thing, when I enabled wins support, I could not get any shares to show
in the hood.  Drive access is slow on connection.  It seems it wants to
authenticate but it tries and fails.  Do I need to setup smbpasswd?  Just to
have generic access to the drives.  

Thanks
Rich