compiz (not)working on laptop

I have acer aspire 5735 with c2d t5800 and intel gma 4500MHD card
Compiz is installed on gnome ,but did not used for long time.
Few days ago I tried to turn it on and it uses 30 - 40 % of cpu, switching between workspaces is slow , if cube deformation is turned on almost unusable.
This was not before, compiz was quite good , and had no big problems and that big cpu usage!
Anny help?

If you run either Desktop effects from the control center or
simple-cssm for the command line. Try setting the effects to default
and see how it goes.

Cheers Malcolm °¿° (Linux Counter #276890)
SUSE Linux Enterprise Desktop 11 (x86_64) Kernel
up 5 days 17:09, 2 users, load average: 0.49, 0.52, 0.93
GPU GeForce 8600 GTS Silent - Driver Version: 190.18

Yes , now it seems fine.