thanks for your reply.
Both konqueror and smb4k should behave as smbmount, that is mount windows share for a user without sudo or su.
If for every share i should add a line in fstab it would be madness
I think the problem is related to the authentication process, because i can actually browse the shares with smb4k. Other people seems to have a similar problem with smb4k, and the only solution suggested is "use CLI and smbmount".