After I managed to run my X fine after my last problem with Xorg configurations, I had apt-getted compiz fusion. After it has run few times ok, It just stopped running, when i try to start it using compiz --replace I get the following error:

/usr/bin/compiz.real (core) - Error: Could not acquire compositing manager selection on screen 0 display ":0.0"
/usr/bin/compiz.real (core) - Fatal: No manageable screens found on display :0.0

After some online searching I found that metacity is trying to be the compositing manager so it locks compiz from being so, so compiz doesn't find anything to attach itself to. This can be corrected by running gconf and disabling the key /apps/metacity/general/compositing_manager.

Thanks for this page for the hint.