I didn't know there was a update to 25, it always said opera was up to date.... hmmmmmm.

chas4, flash is the overall problem. Its sucks on all my web browsers, and not just on the macs. Adobe has had plenty of time to fix the issues and they seem to do nothing about it. I wish more websites would phase flash out, as there are much better options out there already.

Why I have been using click to play plug ins, is to try to avoid the spikes

The other thing to try is a reinstall of Flash Player, (remove Flash Player, then grab a fresh installer), also try clearing the browser cache (might have a corrupted cache file)

I have also noticed some sites use of Flash Player (sometimes it is the video player) are different than others in terms of the Flash Player cpu spikes and the slowness.

Still having this problem. Some websites are un useable. Is this ever going to be fixed? Its been almost a year! mac os x 10.6.8 (not upgradable) opera 24, flash upgraded to latest version.

Try updating to Opera 25 from here: ftp://ftp.opera.com/pub/opera/desktop/25.0.1614.71/mac/ , this should still work on OS X 10.6.

Note that future releases of Opera (26 and newer) will need OS X 10.7 or newer.

Now opera did some update and all the font in my tabs is so big they're cut off and I can't even read them.
On top of the Shockwave thing?
This sucks.
I'm sorry Opera, I really wanted this to work but...I'm leaving you. It's over.

The Shockwave thing is not an Opera thing. It's an Adobe Flash thing. Especially if you're on Yosemite, make sure you update to the latest BETA build you can download from here: http://labs.adobe.com/downloads/flashplayer.html (the build number right now should be 15.0.0.207). Don't worry. It's stable. Actually, it's more stable than the final version they have right now.

And don't try to update it from System Preferences > Flash Player > Advanced. It will lead you to the final version, which is a lower build number (you can blame Adobe for that rookie mistake) and which has this Showckwave issue that you're mentioning. The Beta build seems to have fixed it.
Also, I would recommend uninstalling Flash Player before installing the Beta version. You've got an uninstallation build also on the same page.

About the font...you might be the only one with this issue, to be honest. I don't have it. Never had it.

On top of the Shockwave thing?

This sucks.

I'm sorry Opera, I really wanted this to work but...I'm leaving you. It's over.

I hate Firefox (and it's slow on the Mac OS). Is Safari the only option?

I'm running 24.0.1558.61 (which claims to be up-to-date and "Stable").
Mac OSX 10.9.4
Shockwave and Flash are latest versions

I get Shockwave Flash plugin warnings pretty constantly on sites such as anything Google, Facebook, Twitter, Hulu, Amazon. On some, such as Twitter this morning, it's every several minutes. When I click WAIT, it doesn't seem to slow anything down, but will pop up again before too long.

It's incessantly annoying. The challenge is that at least one Opera rep on this board claims that it's not a browser issue. It's a plugin issue. However, I do run Firefox and Safari on the same machine, and NEVER get this conflict, so that theory is extremely weak, and the way it was presented (we don't make plugins - contact Adobe) was pretty condescending.

I would suggest that if this many people are having the very same issue, then it IS the problem of the Opera development team, and on them to fix it. You have, potentially, a good alternative browser on your hands, so it's up to you whether you want to dismiss problems experienced by your users or actually solve them.

Shockwave Player is a different plug in from Adobe current version as of this comment the current is 12.1.3.153 http://get.adobe.com/shockwave/

http://i.imgur.com/DoJKMU7.png

And it took me 6 tryouts to upload this on imgur because they use a Flash uploader...:|

So instead of adding tab preview or other features how 'bout fixing this? I'm still having the never loading page bug on Windows since Opera 15 got out...:| Now it's 24. Thats 15 + 9(NINE!!!)

I think the best solution for everyone, at least for now, is to disable the plugin monitor in opera://flags.

It's not ideal because whatever is causing shockwave to hang it still happening, but you'll stop getting the constant dialogue box.

I haven't had any noticeable performance issues since disabling the plugin monitor -- if shockwave is hanging, I'm not noticing it. Is it possible that the plugin monitor is just too sensitive?

If anyone else tries this let us know if it more or less solves your problem too.

I've uninstalled the Flash player and done everything I know how to do, followed all the suggestions. No luck.

There must be thousands of people who have this problem and have just given up and gone to another browser which is what I will have to do. I like the features of the Opera browser that no other browser has, but it become such a pure pain to use that I'll just have to go back to Safari.

Please, Opera people... fix this. Thank you.

This is the About Opera:
Opera Version 24.0.1558.53
Windows 7 64-bit (WoW64)

My adobe flash is 14,0,0,179

I have done numerous cache clears and even tried adding RAM memory usage for the game since it seems to occur more frequently when I'm playing the game. But granted, fb and games is mostly what I do online. lol The game is from G! (Game Insight) on facebook. Spefically "The Tribez & Castlez"). Maybe you can get it to show for you by playing that game?

What happens is.. I get this flash-by pop up that says shockwave is slowing my computer. Do I want to end or wait. It's so quick I can't get a snap shot though. But it seems to be the reason I'm slowing up because once it's done, after a few secs things level out and play well. So I'm not actually seeing a slow down other than on start of game and seeing that pop up.

Also noticed with this (may or may not be relevant) , though I rarely have more than one window/tab going... when I do have more tabs? Like say for weather radar? That radar shows over the screen of my other opened tabs shockwave box. Just the box for the shockwave (ex, the radar box or the game box section will show over another one on the other tab.

Hope this helps. Let me know if I can offer more info so you guys can trouble shoot.
Like the others I do not have this problem with other browsers. But I love my opera! lol So I'm hoping you guys figure out why shockwave and opera are not playing nice together.

My most recent alert was from tunein.com when I was trying to play a stream. I forgot other sites which the alert pops-up to as well.

It happens on my Windows 8.1 too but I haven't encountered the alert after I updated that one to 24 Stable. I'll try to monitor it though.