slow graphic effect in virtualbox

i am running ubuntu 12.10 32 bits, slow graphic effect in virtualbox, how to fix it?
i already turn on 2d/3d acceleration.

You won't get it much faster. VB virtualizes hardware, so it can never be as fast as the real metal. Nevertheless it does an OK job as long as you don't throw games at it and don't expect native performance.

There is a known performance issue when trying to run Ubuntu 12.10 on VirtualBox.

For more details and a possible fix see:
http://useranswer.com/answer/why-doe...y-very-slowly/