Adobe Flash keeps randomly crashing

Help is needed badly. i'll go to sites i always go to and haven't had a problem with before, and then, just at random, while i'm doing things with the sites, my Adobe Flash will just randomly crash on me. i have no idea why, and it's really annoying me. One of the sites i'm on a lot is an online game that requires flash as it's a 3-d real-time RPG. i use the latest version of Firefox, and i haven't had problems before with Flash, but now all of a sudden i am. This problem with random crashes are relatively new, and have been occuring for the past two weeks.