My YouTube videos stutter while playing.

Same with everything in general. Even when i type, the browser freezes for a few seconds. Is there an add-on which is slowing me down? Thx in advance.

You have an impressive amount of extensions installed that might be contributing to this slowness.
I won't be easy to track down which extension(s) are causing this.
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
*If you have many extensions then first enable half of the extensions to test which half has the problem.
*Continue to divide the bad half that still has the issue until you find which one is causing it.
Create a new profile as a test to check if your current profile is causing the problems.
See "Creating a profile":
*https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues
If the new profile works then you can transfer some files from an existing profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem.
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

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I'm having similar problems to you all. Chrome and Firefox will play YT videos back perfectly. But for some reason certain users' entire channels that were working fine in Safari on Thhursday 1st Nov 2012 had stopped working by the next day! After upgrading Flash and resetting the cache etc it was a bit better but still some not working. I then downloaded the 6.0.2 update (again after a bit of aggro as some error message kept popping up, then after a while it worked ok). Now still some videos refuse to play in Safari. Latest FF browser seems OK and not too slow. I have always liked Safari though and am a bit annoyed that I've had to to make FF my default as it's a bit ugly. It may be a YT problem rather than Apple. Once upon a time in the hazy crazy days of Tiger and Leopard I had no Apple problems. Now lots of very minor but basic issues keep popping up!

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Hi All,
Before I pull the plug on FireFox, I'll try once more. YouTube Videos do not play. They start then stop with the cryptic error message "An error has occurred.... Other videos play fine. YouTube videos play fine on that other browser. I've tried all the suggestions in this forum, my PlugIns were uninstalled and re-installed, Firefox was uninstalled and re-installed and No, I do not live in India. Anybody have any idea what's wrong. What's Google doing that Mozilla can't figure out?

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Hi There
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First a correction. I am using the latest version of FCP – 5.
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unless you have a partition for another operating system, such as Windows or Linux, most mac users would agree that any a/v software is completly unnecesary and will do more harm than good. There is a free a/v in the appstore called "ClamXav. Have you installed all software updates and also have you tried youtube using different browsers (chrome, safari, opera, etc)?

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What exactly happens when you try?
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See:
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Hi Bob,
Like I said I'm a Newby, I even don't really understand what you mean with this.
I'm working in de Digital Publishing toolset (I thought that was DPS).
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-ipad – turned cookies to accept all cookies … same problem
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Ok I will answer my own issue .. sort of
Partially solved the problem. Seems there is a generalized problem with firewalls and the youtube / apple.
Adding an exception to the firewall for AV scanning allowed the youtube app to start working but accessing the youtube via safari still does not work. Also after adding the exception I had to delete and reinstall the youtube app.
Again before adding this exception .. if I connected to to wifi via my ATT cellular hotspot .. both the app and the safari youtube videos played correctly.
Here are other links that discuss
http://productforums.google.com/forum/#!topic/youtube/4vyNLc41d34
http://www.amixa.com/blog/2012/12/22/how-to-allow-the-youtube-app-to-play-throug h-a-watchguard-firewall-proxy/
http://community.spiceworks.com/topic/113832-how-to-set-up-a-watchguard-firebox- firewall-to-allow-youtube-videos

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http://support.apple.com/kb/ht1379
do that
(cmd+p+r while rebooting)

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I too have the same issue with Firefox and flash videos. I haven't tried to use other browser yet, but I will when I finish this. I first saw this yesterday with Firefox 12.0; same issue with FF 13.0 now. No video anywhere will play, from YouTube to TMZ! I either get an error "error occurred try again later", or the area on the page where the video should be is blank. I have uninstalled and reinstalled all Adobe items several times. Control Panel says they are installed and Flash Manager in CP is OK, but when I go ONLINE to verify or check version, the page is blank. Likewise is the Online Flash Settings Manager. I have tried flushing FF cache, cookies, reset and Safe Mode - all yields zip! It all worked Ok last week. This is just starting either today or last day or so. The ONLY possible cause that I can find is that Windows published about 25 "security" and "NET Framework" updates on June 12, 13, and 14. I suspect the cause might lie there. Last time I check with forums over 500 people were looking for solution to this issue and that number is just in last 24 and it's steadily climbing. I think this is pretty pandemic for Firefox and Flash whatever the cause. If it isn't fixed it will KILL Firefox (maybe that's somebody's goal? - I can see Microsoft/Windows doing something like that to remove competition with their IE browser!).
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At this point, I am fully lost. I have flushed, deleted, reinstalled, updated, disabled, verified, tested, safe moded and God knows what else all without any luck. I guess I am going to start using Chrome; I really hate IE9. (Sorry, Microsoft, suck a big one ) . I am @OldeGreyWoolf on Twitter; if you find a solution, please drop me a tweet! I'll do the same! By tomorrow, I figure there will be thousands of users in this same box. Maybe then someone, some where will come up with a solution! Feel free to copy and paste this post any where/every where.
Bob Woolf, aka the OldeGreyWoolf

My YouTube videos stutter while playing.

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