Download the offline installer here: http://fpdownload.macromedia.com/get/flashplayer/current/licensing/mac /install_flash_player_11_osx.dmg
Quit your browser.
Go to: Mac HD/Library/Internet Plugins
Trash the Flash Player.plugin file from there
Go to: Mac HD/Library/Application Support/Adobe
Trash the Flash Player folder (the whole folder)
Empty the trash
Mount the DMG and run the installer.
Perfect, this did the job. I think rebooting after deleting the folder might have done the trick. Thank you!!!
any advice for same problem in windows xp?
Uninstall from the Control Panel>Add/Remove Programs
Uninstall BOTH Flash Player and Shockwave plugins
Download the offline installer from here: http://helpx.adobe.com/flash-player/kb/installation-problems-flash-player-windows.html#mai n-pars_header
Download shockwave again and reinstall it: http://get.adobe.com/shockwave/
Reboot if necessary.
ok, I found the problem, I have an Intel motherboard (the same one for the last 3 years) with integrated realtek audio. It has a feature called multi-streaming playback, which always has been on.
With flash 11,8,800,94 every time I reboot there is no sound in flash, all I have to do is turn multi-streaming playback off, then turn it on again and restart the browser (either firefox or chrome) or reload the page and voilá sound in flash as usual, weird isn't?
here is a document describing multistreaming playback