The Advent Vega was never the most polished Android tablet in the world -- after all, we had to rely on a custom ROM just to get native Android Market access -- but a reasonable price tag and NVIDIA's Tegra 2 has still made it hard to resist. For those who've managed to snag one already, you may have noticed that the Flash playback isn't exactly awesome. That's probably because the version loaded onto already-shipped versions isn't certified