Can no longer watch Youtube videos anymore Firefox 3.0.3 mac os x 10.4.11

Can no longer watch YouTube videos all of a sudden. Firefox 3.0.3 mac os x 10.4.11. Please help. Thank you.

Yes, thank you very much. The problem was related to the Flash plugin. It had been disabled by Firefox 'for my safety' apparently. No supported versions available any longer by Adobe for ppc macs - had to download an older version from an archive site - fixed the problem. No more crashes on Firefox or Safari while on Youtube.

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For the past few days, I suddenly can't watch any YouTube videos in Firefox without having the video driver crash every few seconds. The screen freezes too, and I have a hard time getting my cursor to the "X" to close the tab. One time it was so bad my computer crashed and rebooted.
I am able to watch the same videos in Internet Explorer 8 without any problems. I am also able, as far as I know, to watch videos in Firefox on other sites like CNN.com without any problems.
My computer information below looks correct. It's a Gateway Model#MX6453, my video driver is an ATI Radeon Xpress 1150.

I fixed this by disabling hardware acceleration. YouTube videos seem to work fine now.
This link was provided in an other YouTube problem: Flash "Display settings" window:
[http://www.macromedia.com/support/documentation/en/flashplayer/help/help01.html]
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I am unable to watch Youtube videos on Firefox ?

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Yes, I have updated to version 33, Now the problem is not as random as it was before. I found that I have absolutely no issues when I use FF for the first time after starting my computer. At this point there is no issue at all I can watch videos when both logged-in/logged-out and also they work perectly if I switch between flash and HTML5.
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Thanks Cor-el.
The problem existed in safe mode as well.
Changing Flash Player hardware acceleration had no effect.
The problem is gone now, after getting the standard youtube interface back.
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i know i made a second post about this i messed up. so i cant watch any youtube videos on firefox but i can watch them on google chrome and internet explore. when i try to play a youtube video i cant cick play and the video is all black i post a screen and show you.

Guys i can watch youtube videos now its just that when i played a video the screen was black but after a while i can watch youtube videos on firefox now.

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Can no longer watch Youtube videos anymore Firefox 3.0.3 mac os x 10.4.11

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