Crash with shockwave flash

in recent days, my PC more than often crashes when watching youtube videos. I get an error message as follows (I translate it, so the wording in English might be a bit different):

"Warning: not responding script:
Shockwave flash is possbibly busy or does not react anymore.
- <stop the script> XOR <Continue> ?"

Whatever you click, the system is dead, the mouse does not move anymore, and only the reboot-buttom of the pc helps. After rebooting, Firefox (33.1.1) usually asks which tabs [not] to restore. When I restore everything, then usually (not always) it will just crash again, in the same way. When I restore everything except that (malicious?) youtube movie, the PC is back to normal.

To reinstall shockwave_installer_slim.exe did not solve the problem.

Before the system is dead, I sometimes see a "video" just in black (or whatever color), but the sound of the video is still fine.
Sonja_MAsked:
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GaryCommented:
Disable all add-ons, extensions and plugins except Shockwave - does it still happen?
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Rob HutchinsonDesktop SupportCommented:
Maybe try an alternate Shockwave player downloaded from Adobe from here:
https://www.adobe.com/shockwave/download/alternates/
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GaryCommented:
One other thing to try is disabling hardware acceleration, go to this page
http://helpx.adobe.com/flash-player/kb/video-playback-issues.html

and follow the instructions under Solve video playback issues (i.e. right click the flash icon)
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Sonja_MAuthor Commented:
@Rob Hutchinson: I had the SLIM edition installed. Do you mean I should install the full version, instead ?

@Gary, about your first tip: although currently I have the adobe shockwave flash uninstalled, I still see the following firefox addon installed:
Adobe Shockwave for Director Netscape plug-in, version 12.1.4.154

I can find no such program under START>system>programs deinstallation.
How can I deinstall a firefox addon ? Or how can I disable them ?
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GaryCommented:
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Sonja_MAuthor Commented:
thanks, Gary,

I just used this RESET of firefox.
As a result, my addons are gone (good), but my plugins are still here, as visible if I type in the URL field of Firefox "about:addons". When I drill deeper, "about:plugins", then I get the detailed listingof all 7 plugins I have. One of them:
-------------------------------------
Shockwave for Director

    Datei: np32dsw_1214154.dll
    Pfad: C:\Windows\SysWOW64\Adobe\Director\np32dsw_1214154.dll
    Version: 12.1.4.154
    Status: Aktiviert
    Adobe Shockwave for Director Netscape plug-in, version 12.1.4.154

MIME-Typ      Beschreibung      Endungen
application/x-director      Shockwave Movie      dir,dxr,dcr
-------------------------------------
When I then click on the link to check whether the plugins are up to date, then 2 plugins are simply forgotten, 3 are listed as up to date (among them: Adobe Acrobat Adobe PDF Plug-In For Firefox and Netscape 11.0.9), and 2 are listed as unknown (among them is Adobe Shockwave for Director Netscape plug-in, version 12.1.4.154).

Again, I do not see any way how to disable (or uninstall) a plugin. How do I disable and/or deinstall a plugin ?

- Sonja

PS: Before reinstalling shockwave flash, I will testrun Firefox a couple of days without.
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GaryCommented:
Tools > Add ons
Click Plugins - you can deactivate them there.
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Sonja_MAuthor Commented:
Garry,

thanks  for your advice ! Now it seems stable.

Best, Sonja
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