Bootchart is an excellent tool for seeing what goes on when your computer boots. However, it only charts up to the login screen. Is there any way to analyze what is happening when I actually log in? I would like to see which startup applications are taking the most time.
Maybe a good starting point is http://www.gnome.org/~lcolitti/gnome-startup/analysis/
The recently announced timechart seems interesting. I can't seem to find a download link for it, though.