Despite trying every solution found both on this forum and several others, nothing worked. I was forced to stick with version 11.01.152, which meant every time I wanted to watch a youtube video, I had to manually activate the plugin. Worse was the fact that 90% of the time, I could not copy URLs from photobucket, as it uses flash to copy links to the clipboard.
In desperation, I tried every single version of the 11.2.202.x flashplugin on Adobe's archives, and none of them worked.
Then I came across this post, which said, in part:
So I went to the Adobe flashplayer archive page, and downloaded the specially patched Flash Player 10.3.183.18 zip, extracted the libflashplayer.so file and copied it as root to /opt/mint-flashplugin-11.squiesuie wrote:Hello again all.
I decided to try again with this problem.
In the link suggested by zerozero: https://bbs.archlinux.org/viewtopic.php?pid=1080414 I read this:From the adobe hompage archive section i found Flash Player 10.3.183.50 which I downloaded, extracted libflashplayer to a folder just so I could find it, then I did as meteorrock suggested, I used nautilus to move libflashplayer.so to user/lib/opera/plugins, (this was the only way I could move libflashplayer to this folder). And then I tried youtube... Guess what, flash now worked, for the first time ever! I have tried several flash sites, I also used the same method to move libflashplayer to the mozilla folder and now flash works in firefox also.For users who cannot update to Flash Player 126.96.36.199, Adobe has developed a patched version of Flash Player 10.3, Flash Player 10.3.183.18, which can be downloaded here.
I restarted Firefox, and it worked! No warnings, and no activation required!
Next, noticing that squiesuie mentioned that he'd used 10.3.183.50, not 10.3.183.18, I went back to the archives and saw that 10.3.183.75 had recently been released (on the 9th of April 2013).
I changed over to this most recent version of the patched plugin, and it too works. The Mozilla plugin check says it's vulnerable, but no warnings and no activation link appears in the webpages, and photobucket is working properly again. Given that this most recent patch is less than a month old, I daresay there is probably very little risk in using it.
So if nothing else works for you, you might want to give this a shot..