EDIT THIS REPLY IS POSTED IN THE FIRST POST
OH and you may also try hardware accelerator wich will make hildon-desktop smoother
BUT it is known to be unstable so if it caused any hildon-dekstop crashs or reboots simply disable it

To enable it :
use any text editor to edit /etc/powervr.d/hildon-desktop.ini and change WSEGL_UseHWSync=0 to WSEGL_UseHWSync=1
so :

leafpad /etc/powervr.d/hildon-desktop.ini

and change

WSEGL_UseHWSync=0
WSEGL_UseHWSync=1

beleive me hildon will be much smoother but as i said before if any reboots occured then disable it by changing WSEGL_UseHWSync=1
to
WSEGL_UseHWSync=0


and you may also want swappolube and it's proposed values

and if you want even more speed try to overcloak to 805 MHz and enable smart redlex to have a 2x battery time usage