[Samba] Winbind separator warning

[Douglas Phillipson]

When adding winbind entries in smb.conf and running testparm I get the 
following warning:

'winbind separator = +' might cause problems with group membership.

"winbind separator = +" is used in the HOWTO (21.5.3.3).  Is this OK? 
Or will I have problems.  What is the separator for? What commands is it 
used with?  I see some querying commands like wbinfo but are there 
commands that require one to use the separator as part of the command 
syntax?  Basicaly, what problem is this error referring to?

Second question:

Should I only create Linux/samba users after winbind is running?  I 
don't think it should make a difference but I just want to make sure.

DSP