Hopefully until it's finished (finally). I realized the problem with it was that I didn't have enough stuff in the plot - I didn't know enough about why the stuff was happening, and I couldn't make everything come together in a way that made sense. I think I've got that all sorted out now (in my brain at least), and it's just a question of getting it down on paper.
It'll be good to finally see this particular project come together and finish. God knows I've spent enough time dithering around with it.