Please check if all your plugins are up-to-date. To do this, go to the Mozilla Plugin Check site.

Once you're there, the site will check if all your plugins have the latest versions. If you see plugins in the list that have a yellow Update button or a red Update now button, please update these immediately.

To do so, please click each red or yellow button. Then you should see a site that allows you to download the latest version. Double-click the downloaded file to start the installation and follow the steps mentioned in the installation procedure.

I'm running Gingerbread, so I don't have first-hand experience with ICS. Does Firefox display a missing plugin icon for the Flash content?

Perhaps one of these will help:

• How do I watch Flash videos with Firefox for Android?
• Why can't Firefox for mobile play Flash on my device?