6 Replies Latest reply: Jul 5, 2013 12:54 AM by SpeedyGonzales
SpeedyGonzales Level 1 Level 1 (0 points)

I´ve a strange behaviour with notification center in 10.8.3 on mid-2012 iMac: I get notification banners for calendar events and birthdays by default – which is what I want. Sometimes, the banners reappear several times a day though I click them away (without clicking on „repeat“/„snooze“). They pop up every couple of minutes. I even get alerts for yesterday´s events popping up again and again saying the event XY will take place „yesterday“.

I wasn´t able to find anything related to this behaviour while searching the internet and the Apple forums, but I hope someone will have a clue what could cause this annoying bug.


Thanks in advance, regards, Till

iMac (27-inch Mid 2011), OS X Mountain Lion (10.8.3), 16GB RAM, 2TB HDD
  • Eric Root Level 8 Level 8 (41,720 points)

    Do you have Notification Center set to Banners or Alerts. Banners should disappear automatically. Alerts have to be dismissed.

  • SpeedyGonzales Level 1 Level 1 (0 points)

    Sorry, I wasn´t precise. Unfortunately it´s not that simple. I´ve set Notification Center to Alerts for Calendar and my Task-App „2Do“. I know I have to dismiss these Alerts in opposite to those Banners that dissapear without further action. But after dismissing they keep popping up again as if I had hit „repeat“ which I definately did not. This is the fact for Calendar-events and birthdays, it´s not happening with my tasks from „2Do“.


    Calendar is configured to set auto-alarms for events – but that is only one single alarm contained in each event – not several over the day …


    All my stuff is being synced via iCloud and I do not have this problem on my iPhone and iPad. As expected I get a single alarm on these devices.


    Further ideas?

  • Eric Root Level 8 Level 8 (41,720 points)

    From the Apple support article below:


    Tip: To dismiss an Alert or Banner without interacting with it, place the cursor over the banner and use a two finger swipe to the right.


    You also might try turning alerts and banners off, then on. Open the Notification Slide out, click the top entry and you should get an option that looks like this:


    Screen Shot 2013-04-22 at 1.30.31 PM.png

    If none of that works, I'd try turning each item off (set to Not in Notifications) in System Preferences, doing a restart and then setting the Notifications up again.



  • SpeedyGonzales Level 1 Level 1 (0 points)

    Dear Eric, thanks for your tip to swipe away those banners – will try that one. I have indeed tried to turn off the alerts in the Notification Slide. This will turn them off for the rest of the day, right? In my case I was getting an alert the next day that XYZ had his birthday „yesterday“. This birthday had already been signaled four or five times on the actual day. Crazy that this all does not happen everytime, everyday and with every event – just by random. I have repaired file permissions and did restarts without effect. Have not tried to turn notification-items off and on in Pref Pane, will test that one as well …


    I will check back, cu, Till

  • Eric Root Level 8 Level 8 (41,720 points)

    Another thing you might try is if you have any 3rd party applications that are running, try disabling them or uninstalling them.


    Given the random nature of this the two suggestions below may not be practical.


    Try setting up another admin user account to see if the same problem continues. If Back-to-My Mac is selected in System Preferences, the Guest account will not work. The intent is to see if it is specific to one account or a system wide problem. This account can be deleted later.


    Isolating an issue by using another user account


    You will have to set up Notifications in this account.


    Shut down the computer and then power it back up. Immediately after hearing the startup chime, hold down the shift key and continue to hold it until the gray Apple icon and a progress bar appear. The boot up is significantly slower than normal. This will reset some caches, forces a directory check, and disables all startup and login items, among other things. If the system operates normally, there may be 3rd party applications which are causing a problem. Try deleting/disabling the third party applications after a restart. For each disable/delete, you will need to restart if you don't do them all at once.


    Safe Mode


    Safe Mode - About


    General information.


    Isolating issues in Mac OS X


    Troubleshooting Permission Issues



    Step by Step to Fix Your Mac

  • SpeedyGonzales Level 1 Level 1 (0 points)

    Eric Root wrote:


    Another thing you might try is if you have any 3rd party applications that are running, try disabling them or uninstalling them.

    Haha! As if you were doing such things to „check“ if something´s wrong … I don´t have the time to reinstall everything on my business machine.


    My work-around: Switching the notification from „alert“ to „banner“ – so that they would dissapear without further action. Still looking for a solution. Maybe mavericks …