How to disable notifications

How can I disable the notifications that randomly pop up in the lower right corner of e2studio.  I have disabled notifications via the e2stuido settings in "Window / Preferences / General / Notifications" and ensured "Enable notifications" is not checked but I still receive notifications.  Specifically the last notification I just received was "New Notification, There are 20 new community news. Click here to view detail".

Thanks,

Jeff