This definitely sounds like something is blocking Flash Player from working. If it had only been one browser I would guess it was a configuration issue, but with all of them blocked it sounds like a third party utility/service.
What anti virus/firewall are you using? Do you have any ad blocking software installed?
Yeah, I think you're right about that Chris. I had NOD 32 installed but I tried to remove that and tested AVAST instead, no change though. In Chrome I also had AdBlock installed but I removed that as well without any change. I've also disabled Silverlight in Chrome to see if that would change anything, but no.
In many instances, you have to fully uninstall the security software to get around the problem. I've seen some aftermarket firewall software cause similar problems as well. Disabling the software usually doesn't do it.
You have three completely separate installations of Flash Player on your machine all misbehaving.
Make sure that Flash Player is enabled under chrome://plugins and about:plugins in Firefox.
If it still doesn't launch, maybe your preferences are corrupted. Go to Control Panel > Flash Player > Advanced > Browsing Data and Settings > Delete All.
Restart your browser(s) and see if that resolves the problem.
If that doesn't do it, I'd go the nuclear route:
Download the Flash Player Uninstaller
Run the uninstaller
Go to http://get.adobe.com/flashplayer and download the installer.
Exit any open browsers and run the installer.