There may be something in about:config to turn off the warning, but
you're way better off upgrading the flash library. The last few months
have been brutal with zero days and drive by downloads with flash.
And, it's come from everywhere; forums, ad redirects, and compromised
VPS boxes to name a few.

IMO, like that of Mr. Clug, is to either avoid flash or, my preference
is to use google-chrome. Chrome has built-in support and the latest
updates for flash (so long as the browser is up to date). It runs
really well in Linux (gpu acceleration, native 64-bit support,
Netflix). And, if you don't need or want to use flash, you can disable
it easily, under chrome://plugins/.

--
Jeremy MountainJohnson
Jeremy.MountainJohnson at gmail.com


On Wed, Feb 11, 2015 at 10:18 PM, o1bigtenor <o1bigtenor at gmail.com> wrote:
> Greetings
>
> I just updated my flash on Iceweasel (Firefox equivalent for Debian) a few
> weeks ago. In the last couple days the 'allow the use of your obsolete
> Flash' query is again polluting my screens.
>
> Does anyone else find this barrage frustrating?
>
> Does anyone happen to know how to let those that create this 'dreck' know
> that I would rather not have it being used on my system?
>
> Any way to eliminate the nuisance?
>
> Dee
>
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