Linux not supported. Dammit MacOS is.. so it uses OpenGLES 2.0/software render.. Lazy Dev's!!!! Platform support was mainline problem for at least a year! In contrast there is http://blog.chromium.org/2010/12/webgl-now-in-beta-here-comes-3d-web.html , http://code.google.com/p/o3d/ with JavaScript APi..
linux + firefox cann't connect to any server... i dunno is it sooo complex to make flash just run on linux? I only know two games on this K that would not run under linux+official flash=this and Sacred Seasons MMORPG.