Comment 10 for bug 559111

I found out that the problem is with this file: ~/.gconf/desktop/gnome/session/required_components/%gconf.xml
Mine looks like this:

<?xml version="1.0"?>
<gconf>
 <entry name="windowmanager" mtime="1270886575" type="string">
  <stringvalue>compiz</stringvalue>
 </entry>
</gconf>

Well, deleting this file should be safe so it should fix the problem.