Me too, close a tab with a youtube video and the browser goes down.

extensions: Noscript, betterprivacy, ghostery, Download youtube videos as mp4, Nuke anything enhanced etc

IF it is the same thing, as seems possible, it may be a known issue only affecting some Macs and the work around is to downgrade by using an uninstaller and reinstall the older versions

• ATTENTION MAC CUSTOMERS - Flash Player 13 "Plugin Failure" Workaround
  Apr 10, 2014 4:28 PM http://forums.adobe.com/thread/1447282
  1. Download and run our uninstaller: http://fpdownload.macromedia.com/get/flashplayer/current/support/uninstall_flash_player_osx.dmg
  2. Download and run the version 12 installer from: http://fpdownload.macromedia.com/get/flashplayer/current/licensing/mac/install_flash_player_12_osx.dmg

"it may be a known issue only affecting some Macs"

No, I'm getting constant crashes on win7 firefox 28 since updating to flash 13.0.0.182

It's not noscript...It's not ghostery. checking memory...

Kvoter,

May I recommend you start your own thread by posting your own question if you are unable to find a solution.

You may be interested in

• Flash Plugin - Keep it up to date and troubleshoot problems
  Keeping it up-to-date may be the wrong solution at present for some Mac users see my post above.
• Adobe Flash plugin has crashed - Prevent it from happening again
• Send plugin crash reports to help Mozilla improve Firefox

To start your own question please

1. use /questions/new
2. Please try to follow the prompts to include full troubleshooting information

APPLE MAC s Please Note
This question was asked by someone with Safari and posting using a Mac

There is a known issue affecting Macs with the latest Flash Player.

Hello

John99 said :

APPLE MAC s Please Note This question was asked by someone with Safari and posting using a Mac

There is a known issue affecting Macs with the latest Flash Player.

also, see why Adobe is promoting a downgrade to Flash 12 instead of the more secure Flash 11.7 ESR on MAC with SAFARI in AliceWyman's post .

thank you

Note there is now a suitable Release of FlashPlayer 13 the following is from an update to the Adobe thread:

Update 4/16
I'm pleased to announce that Flash Player 13.0.0.201 for Mac is now available from http://get.adobe.com/flashplayer.  This release resolves the crash described in this thread.  As noted above, you can either download this immediately from adobe.com or wait for the update to be applied automatically, within 24 hours, via our recommended auto update mechanism.  If you encounter any problems updating, please visit http://helpx.adobe.com/flash-player.html for basic troubleshooting steps.