As far as I know, Firestarter is not installed on my system. I find no link to it to suggest it's installed. And as I said, winbind freezes the system when trying to start; un-installing it allows a normal boot.
Yes, I have read the Vista how-to. As I mentioned originally, though, I have un-limited access to another share on the same computer with the same fstab commands. I have checked the security of my two shares in Vista against eaach other & I don't find any differences.