[Samba] Noob question about cached credentials

[Douglas Phillipson]

Can a samba domain user login successfully to a PC in the domain if the 
PC is not connected to the network?  This assumes the user has logged on 
at some point in the past to get their credentials on the local PC of 
course. 

Is this a "Standard" feature of SAMBA (allowing Cached credentials) or 
do you have to some how trick samba to allow this?  I've looked in the 
Official Samba-3 and Samba by example books but don't see any info on 
this.  Googling this subject seems to show it works sometimes but could 
break  depending on the version you run.

Thanks in advance