I was getting the same errors as you cifs and link errors, I could be wrong but I think something changed in 12.04 version of cifs. My NAS is just Ubuntu 12.04 with samba installed. I think the problem with the link errors was because I did not have a username/password for my media share and therefor cifs was mounting it as an unsecured share. I also had security = share in my smb.conf and I think that was giving the cifs mount error. changing security = user I belive fixed it, but I did change several other setting in the smb.conf on my NAS.
See if setting the password in the webadmin to yourpassword,iocharset=utf8,sec=ntlm this allowed cifs to mount the drive before I changed any of my smb.conf setting. I don't think the iocharset is really needed, but the sec=ntlm worked for me.
I could be totally wrong but was able to get the NAS to mount and it had nothing to do with LMCE.