cannot logout from lxde

[Giuseppe Angelini]

Dear Fedora users,
I have recently experienced a problem with the lxde desktop.
I have updated my linux machine from FEDORA 20 to FEDORA 21 Workstation 
then I have installed lxde with the following command:
/yum -y install @lxde-desktop/
Since then, when I try to log out by selecting logout from the task bar 
menu, nothing happens and my session keeps going on. If I select reboot 
or shutdown from the same menu, it acts normally.
Previously, I was using FEDORA 20 with lxde and I never had any problems 
with the logout.

Any help will be welcome.
Thanks in advance.

Regards.


Giuseppe Angelini
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