Is this with Flash that you created or with Flash that others have created?
Does this happen with all Flash or just some.
For example, can you see this Fash?
... the man walking onto the screen?
What browser are you using?
What Web browser are you using? Have you tried using a different browser?
In the main browser menu, click "Tools" and then "Add-ons" or "Manage add-ons" (depending on the browser.
Find the Adobe add-ons....then the "Shockwave Flash Object" and be sure it is "enabled".
Can you see the Shockwave Flash Object listed in the add-ons??
Flash Player 11.4 is available today. Please install the latest version by downloading it from Adobe site.
After a successful installation, please go to the following page and see the status of Flash Player installation: http://helpx.adobe.com/flash-player/kb/find-version-flash-player.html