I have the same problem, I have Ubuntu Gutsy the Gibbon with a nvidia GeForce Go 7400 card and using nvidia-glx-new from the repositories. I have modified the compiz script from /usr/bin/ and changed the option INDIRECT="no" to "yes", and now compiz.real is always at 19.7 MB while without this option compiz was getting like 500 MB of my 1GB, something horrible.
I have the same problem, I have Ubuntu Gutsy the Gibbon with a nvidia GeForce Go 7400 card and using nvidia-glx-new from the repositories. I have modified the compiz script from /usr/bin/ and changed the option INDIRECT="no" to "yes", and now compiz.real is always at 19.7 MB while without this option compiz was getting like 500 MB of my 1GB, something horrible.