Database Notifications do not pop up?

I switched to database notifications from the regular ones, and the notifications do pile up inside the sidebar (after every polling interval) but they don't pop up. I would like them to pop up. How can I do that?

Solution

Yeah at first I added send() but it would loop over the recipients and the pop ups won't stop so just added the whole code segment outside the loop. It's a little code duplication, but works!