[sofladavid]

I haven't tried using this feature, but looking at the settings, the only things that stand out are in the "notification" options for Calendar, SMS, etc.

1) Notify using "bluetooth, wired headset, built in speaker, etc). are you sure it's set to the right device you are using?

2) "Notify during FREE time only" If this is checked, is your calendar open at the time of the notifications?

you might have already checked these, but thought I'd mention them just in case.