This does happen from time to time when a users settings will change. Checking them and changing them back is fairly easy. Scroll up to the top of the page and you should see a yellow toolbar, select the far right icon to go to your settings. Once in your settings scroll down to "My Preferences" and check to see if you have selected to be notified by email when new posts are made. Once you have the selections you want make sure you scroll down to the bottom of "My Preferences" and click on the "Ok" button to save your settings.

Hope this helps.

Ken<br type="_moz" />