Samba server's nice. Now, I've had problems with it in the past with it stiffing on seemingly innocuous operations (double clicking a share in the window can do it) but I've never been able to tie it to anything.
I've obviously missed the announcement, or David kept it quiet, that the source was on sourceforge so I've had a look at why this problem occurs. I'm still baffled, but at least I can look into it if I want. Kudos to David.
For those who are desperate, it's a couple of hours for a full compile on a SA machine so leave it going and go for some food. For the most part it's clean, but you may need to twiddle the paths to libraries (my system was fine, but then I'm odd).