I have similar problem, on my laptop. It has an Ubuntu 13.10 OS.
I shared a folder: /home/user/Downloads using right-click-> Sharing options...-> Share this folder-> Share name: "Downloads", Comments: "my downloads", both of Allow others to create and delete files in this folder and Guest access (for people without a user account) options are checked.
After applying above changes, whenever I want to access the shared folder from another computer (on my home WiFi network) I open a nautilus window and press "Connect to Server" then enter smb://192.168.0.102/ in the "Server Address" box. Nautilus shows two folders: "Downloads" and "Print$"
If double click on "Print$", a new dialog opens and asks me for username and password as follows:
I do not know if I must enter my connecting computer username/password or username/password of the computer the folder belongs to? Also I do not know how I should enter my username: just "username" or "username@computername" or other pattern? However any username and password lead no success:
the dialog is opened again. An interesting thing is that if I press "Cancel" (instead of connect") the dialog is closed and opened again and if I press "Cancel" for the second time the dialog is closed forever!
If double click on newly shared folder "Downloads", then I receive an error: "Unable to access location: Failed to mount Windows share: Permission denied".
I searched the web to find a solution, but not found any working one.
I checked /etc/samba/smb.config and found no entry about "Downloads" folder! so I added following lines manually to smb.config
and then restarted smbd service. But adding above lines to smb.config did not solved the problem!
comment = my downloads
path = /home/user/Downloads
browseable = yes
read only = no
guest ok = yes
locking = no