I upgraded to 14.04. I was very content with 12.04, never had a problem.
Once I upgraded, at first I wasn't able to access my network on my Windows laptops. I finally created a new samba user, while before I could just use my system login. I can access my network now, but certain files deny me permission. I gave samba users full access; I have tried to change permissions in nautilus, but they will not change. I have
chmod ug+rxw file name. This is my external drive, but I have even copied over to another directory on my internal drive just to see, and I still get permission denied from my laptops.