or there any newer informations about using hardware renderer in applets?
Not from my side....it is possible to do this, the problem lies in loading the native parts. There are solutions out there, but i don't know them. However, in Firefox you seem to be limited to around 30fps anyway while in IE, applets using OpenGL run at full speed. The reason is unknown to me. There is a project to embed JOGL (JOGLAppletLauncher, i think) into an applet and it should be possible to port that to LWJGL without much hassle, because the basic problem is exactly the same.
If it's worth it...that's another question. You'll need a 1.4+ VM anyway, so you may use webstart as well.