There's a patch in the tracker for timed autosaves, which is a very
often requested feature. It's unlikely that 0.46 will never crash, so
I'd very much like to see this patch in 0.46. I haven't tested it yet
but the code looks good to me. I'd like to try and get this one in
soon, or if someone feels like doing it instead, let me know (I'm
quite busy right now).