Thanks for taking the time to report this bug.
May you confirm us if that bug can be reproduced on kubuntu (edgy)?
Thanks in advance
** Changed in: kdeartwork (Ubuntu)
Assignee: (unassigned) => Paolo Sammicheli
Status: Unconfirmed => Needs Info
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kclock.kss hangs after a while
https://launchpad.net/bugs/49500