I've updated samba to 3.0.23c on two different servers and I get the same problem on them. If I have a valid users = @unixgroupname parameter in a share the share stopped working. When I try to connect to it I get the following error message:
[root@samba samba]# smbclient -U amester //server/install
Domain=[THEOL] OS=[Unix] Server=[Samba 3.0.23c-1.fc5]
tree connect failed: Call returned zero bytes (EOF)
If I remove the valid users line it works fine. It worked fine with samba version 3.0.23a but now it do not works. And it's the same problem on two different servers so I think it should be a problem in Samba. And workaround for it?