Flash Player 11.2 had some bugs that caused a lot of problem for our chat app (and we weren't the only site affected).
Well Flash Player 11.3 is now available, and all that should be fixed.
If you were already using version 11.2, the upgrade should be automatic (and maybe silent), because as of Flash Player 11, upgrades are automatic.
I believe this will fix audio problems we've had -- this new version of the Flash player, combined with a change of server software for us.
But we need some time to implement the changes (we need to undo workarounds we did for the Flash Player 11.2 bugs), so give us some time.