I currently use likewise to use my active directory credentials to log on to ubutu (12.04). When I want to mount one of our windows shares, I am prompted for a password again. Is there a way to reuse or pass through my current credentials? I've seen some posts on this site regarding single sign on, but I'm not sure if/how likewise can play into this.
Are you planning on mounting the shares permanently through /etc/fstab? Or only when you need them? Also are you running Desktop GUI or CLI only for normal use?