You can check for problems caused by recent Flash updates and try these:

• disable a possible RealPlayer Browser Record Plugin extension for Firefox and update the RealPlayer if installed
• disable protected mode in Flash 11.3 and later
• disable hardware acceleration in the Flash plugin

• http://kb.mozillazine.org/Flash#Flash_Player_11.3_Protected_Mode_-_Windows

Thanks for the answer,

I have the Shockwave Flash 11.4, (obviously it has updated it self the 8 of October).

Since I do not know how to find the "protected mode" or how to "disable hardware acceleration", I disabled the whole Flash 11.4, But the problem remain ... What can I do ?

Are you running a 64 bit Operating System?

If you disable the Flash plugin then you shouldn't be able to see any Flash content.

See also:

• http://forums.adobe.com/message/4468493

Hi,

Thanks to all of you ....

I updated to FF 16.0 and now the sound sync is OK. And the update also activated the Flash  ;)

Reos