I've a funny feeling I made a thread about this ages ago on here

anyway...
For AGES now, I've been unable to watch videos on Facebook, iPlayer and other such things because my Flash player is out of date. Every time I go to update it, it fails to start, or if it does then it crashes half way through updating. This is obviously very frustrating. I've tried deactivating firewalls, I've uninstalled my old version of Flash to see if that helps but then I just can't watch any videos at all so I had to reinstall version 9.something etc. Does anyone have any idea why this is(n't) happening? I'm at the end of my tether!