[malaviKat]

I'd file them down (personally)...but that's only because I like symmetry. I feel your pain. I have a few months worth of growth (small trims every so often to keep them neat) on my hands that amount to just under a centimetre in length and my thumb just started splitting on the weekend. Bye bye lovely manicure!

(One thing I've read is to make sure you dry your hands properly every time you wash them. Water makes nails more susceptible to breakage; even if you're careful not to smash them into things, they will have a tendency to split. I'm notorious for letting my hands air dry...go figure.)