User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-166.216.128.153-20111210201816/@comment-4609162-20111210210009

Unstable meens a big monster COULD show up a warning sighn meens one WILL show up other than the oridgonal quest monster, and you as a hunter will be givin more time to hunt it. At least thats how it was in portible 3rd....