Scot, I'm sure that fresh seeds would guarantee better results. I don't know how old the seeds were that I got from RPS, but I ordered them right after they were first offered (with a large palm seed order!) and they must have been pretty fresh for me to have that many germinate. All the seedlings popped up at the same time a few months after sowing them. Then no more for the next six months and I figured the rest of the seeds were duds so I tossed them down a hillside near my shadehouse. I dropped a couple seeds onto my potting table and a couple months later one germinated, just laying there on the table among a little spilled soil and plastic bags! I planted it out during this past rainy season. I forgot about this one when I posted the photos of my larger ones.
This photo was taken a few months ago, it's gotten fatter since then.