Same problem. Never thought I would use Internet Explorer again but this is intolerable on a computer that I'm trying to use as a media center. This happens after about 30 minutes of streaming, but not every time. Like the original poster, I have to force reboot to escape the problem. Mouse/keyboard seem to respond but only with extremely long delays and with only limited effect. This may be some kind of memory leak. The one time I was able to get into the task manager while experiencing this problem I noticed that FF was at 300+ MB of RAM.

WinXP SP3, Firefox 3.6.6.

Identical problem; using Mozilla Firefox 3.6.6

Same problem, running 3.6.6 on Mac OS X 10.6.4. Tab turns completely black, audio runs still. Have to refresh page to get video back.

I have the same problem when viewing a movie in netflix full screen or windowed I think, video freezes, CPU shoots up to 100%. I have to hit escape then hit ctr-alt-Del about 10 times to finally get task manager to interrupt Firefox, take about 3 minutes to restore control. After this happens movie continues to play fine. I noticed this started happening with the plug-in-container was added to Firefox. Identical to above posters. If I can catch a screen-shot of task-manager while problem is happening, I'll post a screen-shot. Any solution would be great.. Thanks,

Oh yah, I'm on windows xp, I think service pack 3.

For some reason the plugin container is causing some wierd stuff. I didn't know you could have more than one instance of task manager open. while this bug occurred, I had 15 task managers open. So somehow this plugin container is doing soemthing funky with the windows system. I'm the same poster as the last 2 post

Hope this helps the troubleshooting.

Windows xp sp3, ati video card, amd dual core

Yep. Same symptoms after updating to FF3.6.8 on XPSP3.

Anybody have a fix?

Same problem, Intel Mac with Firefox 3.6.6, but safari works fine...

I also have this problem, with Netflix only. May be a Silverlight issue? Full screen flickers on then off, then no video. Sound keeps playing. OSX 10.6.4, FF 3.6.12, Silverlight 4.0.50917.0

I Have the same problem, Netflix asd fancast - (comcast hulu)

Netflix - picture goes black, sound continues for a moment then stops.

Fancast - picture freezes then catches up to sound.

I believe it is a silver light problem, because it happened again on IE 8.

Exactamundo same problem. Netflix streaming on comcast crashing firefox and chrome, usually about 15 min in. 20Mbps cable modem so not that, just hooking up computer (XP) to tv. Tried IE 7 - problem solved. (It'll be the only thing I ever use IE for, but still...least I can watch a movie now!)

Solve blank / black screen problem while playing youtube videos in full screen mode by OriginalTips.com,

http://www.originaltips.com/youtube-black-screen-problem-on-fullscreen-solution-24

I have the same god damned problem...it's so freaking annoying. I had to switch back to safari and google chrome...I hate both, but at this point its better than firefox. Please fix this!

Well, it's official. Lots of folks have this problem. Is there an answer? Is there a FF mediator there?

Ditto.

I seemed to have corrected the problem in my case. I am on Lenovo G560 4GB RAM, I5, Windows 7 Home Edition 64bit running 10.0.2 of Firefox.

1) I turned off several plugins and one extension. 2) I noted that plugin-container.exe was eating up a lot of RAM and googled on that along with firefox and screen freezes to get more hits 3) Finally I updated Adobe and Silverlight both of which were a full rev back:

  http://get.adobe.com/flashplayer
 http://www.microsoft.com/getsilverlight/Get-Started/Install/Default.aspx1

In my case this has appeared to do the trick.