I just got the samsung acclaim the other day and i've noticed sometimes when i receive a text, my phone will go off, and when i check it, it says i have no new notifications, but when i actually go into "messaging" it will say that i have a text (the text will be bold saying that it's unread). Sometimes it does this, sometimes it's normal and actually says i have a new notification. Why does this do this? Is my phone screwed up or is it just something in settings?

Thanks