Does flashplugin still use mms.cfg?

I was poking around the flashplugin of Adobe for Linux trying to get the Hardware Acceleration working (which my current configuration supports). Then I found several forums/blogs that recommend I create/modify some or other value in the /etc/adobe/mms.cfg, which didn't help at all for my current situation. This leads me to think, does the Flash non-free plugin of Adobe for Linux read this file for configuration? Is there another way to modify Flash configuration without the traditional GUI's (flash-player-properties doesn't help in the HWA topic and I am already tired of ticking the box Right-click -> Settings -> Enable Hardware Acceleration)? I'm using Iceweasel 24.0a2, Debian Wheezy 7.0, _Shockwave Flash 11.2 r202 11,2,202,297_. $ glxinfo | grep render direct rendering: Yes OpenGL renderer string: Gallium 0.4 on ATI RV515