In Nautilus when trying to share a folder that is owned by me, i can not share it without a password (Guest Access) as seen on the image. I already installed the samba service that was needed. What could it be?
I don't have a definitive answer for you, but I thought I'd link to a similar question I asked a while back. There were many informative answers and there is a lot of good samba-related information in that thread: No access to Samba shares
I feel your pain, sir. I still haven't got Samba to work satisfactorily. I just gave up and use sshfs now.
Found the solution after testing for a while. The most simple one is this:
In the [global] section after the [global] tag insert
usershare allow guests = yes
Should read like this:
Save it and just restart Samba service:
Now reopen Nautilus. The option for guest should be enabled again when you try to share a folder as you can see in the image.
Already tested with Ubuntu 10.10, Windows XP and Windows 7. The thing is you need to remember to have Samba and the clients that will connect in the same workgroup which the variable can be found in the [global] part.
Hope this helps anyone else. For me i REALLY need this option since i share Movies, TV Series and Music over the network for several friends (And my girlfriend which is the 99.99% reason i needed this fast ;) )