iceweasel plugin-container, flashplugin, and gnome3 issue

[tadziu <tadziu23@gmail.com>]

hi, 

i've just installed gnome shell on my debian testing. 

everything seems to be ok but flashplugin-nonfree makes
my machine choke completeley with plugin-container
consuming more than 70% of CPU. i never had such
issue before migrating to gnome3. problem occures while 
watching youtube and other online media. didn't checked
chromium yet, but anyways i wont be using it in a long run

still no satisfying answer found on google, so i'm asking
for help. 

thanks in advance
/t

p.s.
chromium consumes up to 50% of CPU so it's still far
from good.