Flash plugin sound unbearably quiet

Hello,

Suddenly all sound played by the flashplayer plugin (in all browser) is utterly quiet.

I am running 11.3 as it comes from the DVD.

What did I do last:

I installed wine with quicktime and realplayer (which both ran on full sound).
Uninstalled each of them. And then uninstalled Wine.

I also made todays automatic update.

All other sound is still on full sound…
this is utterly annoying what can I do?

I found some threads on Mozilla, but they are mostly windows related and
seem no help at all.

many thanks in advance
Ivo

Update plugin,
problem resolved.