Firefox Flash problem

Hey guys, I am having an issue with flash on firefox for the last two days. Worked one day and not the next. It seems to be hanging whilst content is loading rather than not working at all. I have noticed it on miniclip and on Facebook. I have tried disabling add-ons in firefox and even uninstalled and re-installed completely (which was an issue in and of itself for some reason) without any success. Flash content works fine in chrome and IE. Is anybody else having a similar problem? Or just a useful suggestion. Cheers me mukkas.