Currently Being ModeratedNov 7, 2013 2:49 PM (in response to KC9RYT)
Thank you for the details of the issue you are experiencing with the iCloud pane of System Preferences. I recommend the following article to isolate and troubleshoot the issue:
Thank you for using Apple Support Communities.
Currently Being ModeratedNov 9, 2013 3:02 AM (in response to KC9RYT)
Please help, dear Apple. It is a big issue on this forum!
I've installed BusyCal as alternative calender app and it syncs just perfectly with iCloud. The native mac apps (calender, system preferences, ...) do have many sync problems.
The problems started after installing Mavericks.
Currently Being ModeratedNov 9, 2013 12:32 PM (in response to KC9RYT)
Thank you for the additional information. Due to the nature of your issue or question you may find more information by using another one of Apple's support resources - https://getsupport.apple.com/GetproductgroupList.action
All the best,