Hey there Steve,
I've not done anything to any of the settings and am just rendering out via Render > Batch Render.
There wouldn't usually be a problem but as it's for another university project haste was needed. Basically it's a mini site covering the basics of Hair and Fur, I needed to render out a demonstration of what adjusting the values would do to each attribute in the fur menu using default lion mane as the start point (25 animations or so, each at 49 frames).
Because it needed to be done quickly I ended up rendering each frame seperately then collecting the 49 frames from the tmp file putting them into a new folder and starting the next animation. Very boring but at least it's done now (5 - 10 minutes to do each animation rather than an hour!).
I've since made another animation for the project illustrating how to use dynamic hair curves to make a dynamic joint chain and that rendered out 100 frames in a few seconds, go figure!!