I'm having the exact same problem. First time I was experiencing this issue was about a year ago when I was setting up a new Server based on Ubuntu 14.04. I was not sure whether it was a bug in Samba or a problem womewhere else. My Solution at that time was going back to 12.04 with Samba 3.6.3 which stills works fine.
Now, for different reasons I thought about upgrading to 14.04 and was hoping to find this bug gone. It's a shame that it's still existing.
I also tried setting up Samba on a Debian server and even compiled the newest Samba version 4.3.1 with no remedy.
I assume it is maybe not a problem based in Ubuntu or Debian but only within the Samba sources.
I'm having the exact same problem. First time I was experiencing this issue was about a year ago when I was setting up a new Server based on Ubuntu 14.04. I was not sure whether it was a bug in Samba or a problem womewhere else. My Solution at that time was going back to 12.04 with Samba 3.6.3 which stills works fine.
Now, for different reasons I thought about upgrading to 14.04 and was hoping to find this bug gone. It's a shame that it's still existing.
I also tried setting up Samba on a Debian server and even compiled the newest Samba version 4.3.1 with no remedy.
I assume it is maybe not a problem based in Ubuntu or Debian but only within the Samba sources.