Hi, I just read a news about performances in Gnome desktop. http://linuxfr.org/2005/10/14/19737.html (in french)
You should try to use profiler to find part of code which use CPU. I see at two good profilers : http://oprofile.sourceforge.net/about/ http://www.daimi.au.dk/~sandmann/sysprof/ Haypo
