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  • Can you try to delete cache from Adobe Flash. Go to Mac System Preferences - Flash Player - Advanced - Delete all Browsing Data and Settings.

    I tried this way. And I didn't watch this alert for a while. But I watched this alert again after a few days.

  • Same here. It's quite annoying. Tried to debug but I couldn't solve the issue.

  • Anything new on this? I've tried everything suggested here without success. I'm using the last stable opera version now.

  • Guys, we added the plugin monitor to help prevent plugin crashes, freezes etc. I see a good few people had issue with this so, we are investigating this now.

    Myself, I am not able to reproduce it. So it would be great if someone could send us some info like mac specs, how many apps you have running at the same time, how many tabs you have opened, how many of them have flash content, is there anything suspicious in activity monitor (like ram usage) while getting this.

    Any info that you might think could help would be appreciated.

  • I am having the same problem, not at you tube, but at other sites like hulu, history channel, etc. I have the
    I am running Snow Leopard, but have a lion os cd coming in the mail, plus 4 gig of memory coming since lion is more cumbersome. I can't upgrade pass lion on this box,
    I ran the adobe uninstaller, and also ran terminal to find adobe which I
    hate and remove all versions from the library. I reinstalled adobe's latest version, I found
    going to adobe preview pane and selecting not running auto, but click to run helps.
    Then click on video as it runs and select quality, stepping it down helps, sometimes
    you can't select it especially at history channel as the menu for adobe freezes often.
    deselect enable hardware acceleration, and up the amount of local data it can save on your box.
    this works about 50 percent of the time. At you tube using mac tubes helps. deselect enable
    java plugs in your browser. Java's plug in is very serious security issue and they've stop
    supporting it for any machine older than 5 years old in macs. Plugs need to go the way of the dodo as they are a serious threat even for brand new machines and os's.
    By the way, if you have a video downloader like download helper, etc, let the video freeze and just download the video and play it outside the browser. Just save it to your desktop. This is more secure anyway.
    my specs are:
    Model Name: Mac mini
    Model Identifier: Macmini2,1
    Processor Name: Intel Core 2 Duo
    Processor Speed: 2 GHz
    Number Of Processors: 1
    Total Number Of Cores: 2
    L2 Cache: 4 MB
    Memory: 1 GB
    Bus Speed: 667 MHz
    Boot ROM Version: MM21.009A.B00
    SMC Version (system): 1.19f2

  • ps. using https only add on will aggravate matters. you need to add a rule for you tube so it will only operate when you log in to your account, not when you are streaming videos. you can't force google to stream its videos https. it doesn't work yet

    Plug in checker is pointless if someone like sun java or adobe flash/shockwave aren't updating for your os anymore. Unless your willing to get on Apple's endless consumer treadmill and buy a new computer every four years.
    I have snow leopard and they act like its windows 98. Xp is still supported by Microsoft for security updates its on the longterm part of the release now.
    Ironically I also have a powerpc g4 laptop and use ten forty fox browser, and it has no plug ins in it. But I am able to still view videos without them using the work arounds the ten forty fox community supplies. check it out. mactubes, quicktime enabler etc.
    It is no longer save to use java plug in or adobe on a ppc box. You can remove them from your browsers esp Safari and still be safe and still view videos. Opera I guess has abandoned ppc users even for powerful boxes like G5's and Pros. I still prefer Opera to Safari for macs since Apple in its wisdom, like Google and Chrome, won't let you grab videos. Opera will. The internet is my tv. no cable no satellite.

  • I watched this alert a few times on Opera Next 24 (24.0.1558.25). But I think the number of times that I have watched this alert on Opera Next 24 is less than that of Opera Next 23.

  • I'm having this issue as well, it's highly annoying...

  • I'm having this problem. It usually happens when my macbook pro uses the high performance GPU. Will happen randomly, sometimes when there is no flash. I have a screenshot.


  • As stated above, I'm using Opera 23.0.1522.75 (update from 23.0.1522.60) and Flash on Mac OS X 10.9.4 64-bit.
    As for opened apps, I use XCode/Sublime Text/MAMP/ADT, one or more, depending on what I am working on + Terminal/Adobe Reader/iWorks apps/VBox (again, one or more, depending on what I am working on) + Photoshop/Illustrator/GImp (same like the others) + Vox music player and Messages for Y!, FB and GTalk and OneDrive (I'm using these all at once, along side other set of apps). I'm also trying to keep Opera opened with under 15 tabs.

  • I'm having the same problem with Shockwave. And it doesn't matter how many tabs I have open. Pretty annoying. None of my other browsers do this, only Opera.

  • So, for those of us with Mac OS 10.6.8 is the game over with Opera? I uninstalled Flash, but that didn't help, I still get slow-downs and the beastly Flash message. Safari no longer works, Chrome does on a good day...

    I can't update the OS because I'd have to do without Eudora

  • I have the same issue since about two-three weeks ago.
    My version of Opera: 23.0.1522.75,
    OS: Windows 8.1 64-bit (WoW64),
    Adobe Flash Player: 14,0,0,145,
    Shockwave Flash 14.0 r0

  • Thanks for investigating

    I will say I haven't experienced it on Opera stable since upgrading to 23.0.1522.75, but it seems like others have. Whenever I upgrade to a new version, it seems to get better than gradually the crashes increase, although that may be in my head. I can't really say what's triggering it, but seems to be at least occasionally youtube and sometimes sites affiliated with that have embedded video on the home page, for example is one I visit often that seems trigger the crash from time to time.

    I'm on OSX 10.7.5.

    Other apps I usually have open include itunes, caffeine, sparrow lite, twitter, bettertouchtools, growl, alfred. I haven't had occasion to check activity monitor at the moment of a crash, but it doesn't seem to affect anything else or slow things down for very long. I would guess I normally have 6-8 tabs open when this happens with at least a couple including flash content and the crash affects any tab with a video -- i get a banner saying shockwave has crashed, reload page.

    Flash and shockwave 14.0 r0

  • Flash just released an update a few days ago. Haven't had the problem since then.

    Now lets just get opera to sync correctly..

  • The dialog is meant to allow you to force-quit any plug-in that is running rampantly in the background and stealing your computer’s resources. Please contact the plug-in vendors (in this case Adobe) if you see this dialog often. Opera is making a browser, not a browser plug-in.

    (The alternative is letting the plug-ins just eat your MacBook’s battery in the background without you understanding why you get the Low Battery warning after only ten minutes of use.)

  • I'm still having the problem after this latest update.

  • Same issue here.
    Mid-2012 Macbook Pro (non-retina) with 8gig of RAM and an i7

    Adobe Flash Player
    Shockwave Flash 14.0 r0


    This is super annoying really 😞

  • Similar problem here. After my Mac goes to sleep both Shockwave and Google Talk pop up with "Shockwave / Google Talk has stopped responding." I then need to reload whatever pages were using these plugins.