I can't watch youtube video by safari to 5.1.4

Safari Empty cache, reset

Safari Peferences/Security ensure enable java and Enable java plug- ins are checked

http://www.macromedia.com/support/documentation/en/flashplayer/help/settings_man ager03.html

are both boxes at the bottom checked

(allow 3rd party flash content to store data etc checked)

If you are using Google Chrome Browser

Google chrome has adobe flash installed and it is not the latest

you should disable adobe in google chrome and just keep adobe flash running on your mac, which has the latest version

see

http://www.chromefans.org/chrome-tutorial/how-to-disable-flash-player-completely -in-google-chrome.htm

http://www.adobe.com/software/flash/about/

version 11,1,102,64 is the latest.

A way round may be

I found a Adobe forum which suggested going into System Preferencs, then Energy Saver and Unchecking Automatic Graphics Switching on my mac book pro.

This sorted BBC iplayer out for me before Safari got updated

have you tried deleting and reinstalling Safari

http://www.apple.com/safari/download/

ALSO

Forum member hear had some answers for Safari freezing

Klaus1 Somerset, UK

Probably a third party add-on.

The following refers to Safari not launching but the suggestions for remedy also apply to freezing:

If your Safari won't open, one or more of the following procedures should fix it:

1. Go to Home/Library/Safari/ folder and remove the following two files:

history.plist

lastsession.plist

(Safari may not load properly If these two files are corrupted.)

and also go to Home/Library/Preferences and delete the file com.apple.Safari.plist

2. Go to Home/Library/Caches/Metadata/Safari/ and remove the [i]contents[/i] of that folder.

(These are just webhistory files and are not required for Safari to run. However, similar to preference files, problems can arise if they have become corrupt.)

3. Locate the cookies.plist file that's located in the Home/Library/Cookies/ folder and remove it.

(Again, faults in stored cookies may interfere with Safari's launch.)

4. Check whether any of your third-party internet plug-ins may be interfering with the launch of Safari by carefully moving them to the desktop (do NOT delete them at this stage). You can find these in two places:

Home/Library/Internet Plug-Ins/ folder, and Global plug-ins are located in the Macintosh HD/Library/Internet Plug-ins/ folder.

Also look in Library/Input Managers where other third party add-ons may lurk. If you find a SIMBL folder, please note that some SIMBLE.bundles may require updating or possibly removal. More information on third party add-ons here:

http://support.apple.com/kb/TS3230?viewlocale=en_US

Restart Safari and place them back in the correct folders, one at a time, closing and re-opening Safari each time. If you discover that one of them was causing the problem with launching Safari, trash it and download and install a fresh copy.

Note also that Safari does not accept any third party tool bars not supplied as part of authorised extension. If you have installed any of these, delete them, or post back for instructions on how to do so.