Kde startup animation disappear

[Mario Santagiuliana]

I update my fedora with fresh installation to fedora 16 but I have got the 
same /home directory of previous version (fedora 14).

Now, after login, kde doesn't show to me the startup animation...the 
problem is similar to this bug:
https://bugs.kde.org/show_bug.cgi?id=283430

but I don't have a second display now and if I create a second new user, he 
has no problem.

Do you know witch config file I should change?
Thank you in advance!
-- 
Mario Santagiuliana
www.marionline.it
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