Samba not working anymore

[mindless]

Hello,

I had a samba share set up correctly before on my media hdd.
Now (after my last upgrade I think), I have some troubles with samba :

First, I cant find a way to control the samba deamon/service :
I have no samba service nor /etc/init.d/samba or anything of that kind.
I only have a smbd command that doesn't seem to do anything and has no restart command option, and a smbd service which by default is stopped and doesn't seem to do anything either.

How can I restart the samba server to apply newly entered settings ? (Or even make sure it's correctly running)

Second, if I browse the network from a windows computer, I can see the "XBIAN" server (not share) and if I try to connect to it with the right credentials, the connection is refused.
On the other hand, I can connect to the smb server by directly entering the pi's IP into the explorer.

Any idea about that ?

Thanks.
Regards.