With our new Windows 7 machines, we need at least samba 3.3.7. However, our server with Debian stable doesn’t have that in its repository. So, I was forced to install samba with lenny-backports.

I included this line in my /etc/apt/sources.list: 

deb http://www.backports.org/debian lenny-backports main contrib non-free

Because backports are disabled by default, I needed to pin all the packages required for samba: 

Package: samba
Pin: release a=lenny-backports
Pin-Priority: 999
 
Package: smbclient
Pin: release a=lenny-backports
Pin-Priority: 999
 
Package: smbfs
Pin: release a=lenny-backports
Pin-Priority: 999
 
Package: samba-common
Pin: release a=lenny-backports
Pin-Priority: 999
 
Package: samba-common-bin
Pin: release a=lenny-backports
Pin-Priority: 999
 
Package: libwbclient0
Pin: release a=lenny-backports
Pin-Priority: 999
 
Package: libtalloc2
Pin: release a=lenny-backports
Pin-Priority: 999

I haven’t actually installed it, but I will soon. So I don’t know if it will work or not. Aptitude -s suggests it does.