Crashes or other problems with certain multimedia content in Firefox (such as Youtube videos and Flash animations or games) can often be resolved by performing the steps in these Knowledge Base articles:

• Flash Plugin - Keep it up to date and troubleshoot problems

• Adobe Flash plugin has crashed - Prevent it from happening again

• Flash 11.3 doesn't load video in Firefox

On Windows Vista and above, you can disable Flash protected mode by following the instructions on these pages:

• http://forums.adobe.com/thread/1018071#TemporaryWorkaround
• http://kb.mozillazine.org/Flash#Disabling_Protected_Mode_in_Flash_11.3

(See this Adobe blog post for technical details about Flash protected mode.)

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None of these help. Problem is that this problem occurs on more computers. Laptops mostly. Problem is with this content link text Even after maximizing browser window it still stays cropped. You can see it in attachment.

This could happen if your zoom level for the site is reduced from the default. The reason is that Firefox uses the zoom level to enlarge or reduce the space for Flash, but the Flash content itself is a fixed size and doesn't enlarge or shrink to fill the space.

I'm not a Flash developer so this might be completely unrelated, but what if you comment out this parameter:

so.addParam("scale", "noscale");

I guess the risk that that the scaling could be hideous...

That helped. Than you.