it's the same problem here

Same thing happens to me. As far as I can tell, it just started a few days ago. I have made no changes of which I am aware. Today, I disabled Java Development toolkit add-ons. (One was already disabled, but one was still active.) I have only one version of shockwave flash running as a Firefox add-on. Having more than one version running is a known issue with Firefox. Reluctantly, I have just made IE my default browser, after several years as a devout Firefox fan. Pretty frustrating.

windows xp, same build all updated.

I have a second computer with more ram it does not appear on, weird.

On an Adobe forum I found something that seems to work for me, perhaps it will for you too (Until there is a permanent fix.)

1) When the video starts to play, right-click on the video. 2) Select Settings 3) Clear (un-check) "enable hardware acceleration" 4) Close the dialog box 5) Expand the video to full screen 6) Enjoy

I have updated to Firefox version 3.6.8, hoping that this would be fixed by now, but I am still having the same problem.

Disabling hardware acceleration seems to make videos more choppy. I hope this gets figured out soon!

Re: David, Your solution ( Clear (un-check) "enable hardware acceleration" ) worked great. Fixed my white screen problem.

Thanks

thanks david.... i did what you said and i aprove... now this happen because firefox did an upgrade or adobe??? thanks you guys

it's not cool because i used to rilly enjoy watchind video in full screen and the audio can be hear but not the video its all white :(, im nt smart on da computer so can someone explain in simpler terms what i have to do to fix it please :)

David, thank you. It is really work. Now I'm enjoying watching the full screen.