Three methods for enable shocwave flash plugin for firefox

Macromedia Flash, refers to the Flash Player and browser plugin needed to handle SWF videos, web page animations and interactive content. Even though the Flash plugin is also referred to as "Shockwave Flash", it should not be confused with the Shockwave plugin that handles "Shockwave for Director" content. After installed this shockwave flash plugin on Firefox, sometimes we will suffer the following three problems:
1.shockwave flash freezes firefox
2.shockwave flash keeps crashing firefox
3.shockwave flash firefox not working

Now how to solve these problems?
First method:
Click "Ctrl+Shift+A" to open plugin tab in firefox. Check your shockwave flash plugin and update to the newest version. Restart your firefox again, your problem will be solved.

Second Method:
If "Update Add-ons Automatically" have ever been chose, now there is no need to update the newest version. We should disable the shockwave flash plugin and enable again. Restart firefox, it will be ok!

Third Method:
Uninstall the shockwave flash plugin, and install again.
Click the Start button to open control panel, select adobe plugin and then click to uninstall.
After uninstall, click here to download shockwave flash plugin http://get.adobe.com/flashplayer/.

All above methods are effective.