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Old 09-01-2009, 12:38 AM   #1
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Registered: Sep 2009
Distribution: Fedora
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Unhappy Firefox Cannot Display Youtube Properly or Play Streaming Videos

I recently noticed that my Firefox browser can no longer play any Youtube videos. I'm sure I must have installed something which interfered. When I go to, I see a really ugly site as can be seen in the picture. When I click on a video, I get the message "Hello, either you have JavaScript turned off or an old version of Adobe's Flash Player. Get the latest Flash player."

Furthermore, I have noticed that I cannot play any videos, videos, etc. In other words, I can't watch streaming videos online at all!

This has been really annoying. I have already installed the Flash plugin through yum. I'm using Fedora 11. I went to Gnome's System->Administration->Add Remove Software and saw that Adobe Flash Player 10.0 (flash-plugin- is checked.

Currently, under Firefox Preferences I have Flash video set to use mplayerplug-in. I also have 3GPP multimedia file, AIFF Audio, Amiga SoundTracker audio, MIDI audio, and Ogg audio set to use mplayerplug-in. Every other application uses MozPlugger 1.12.1. Changing Flash video to use Movie Player appears to do nothing.

Can someone help me out here?
Old 09-01-2009, 01:34 AM   #2
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Registered: Apr 2007
Location: Germany
Distribution: Slackware
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somewhere on your system (in Slackware /usr/lib64/mozilla/plugins/) is the plugin-directory for mozilla. There should be a file "". If not, you can download the plugin from adobe in tar.gz-format and after extracting the file you'll have this "". Copy it into the appropriate directory (.../mozilla/plugins).
If the file already exists check out if there is a newer version available. And if you already have the latest version you can go on with checking the settings of firefox.




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