Killing the following process solve the problem: kenorb 11328 0.0 0.3 131788 12392 ? S 13:55 0:00 /usr/bin/python /usr/share/kde4/apps/muon-notifier/releasechecker
Killing the following process solve the problem: kde4/apps/ muon-notifier/ releasechecker
kenorb 11328 0.0 0.3 131788 12392 ? S 13:55 0:00 /usr/bin/python /usr/share/