Text Messaging problems - Samsung 660

Minor problem... If anyone knows what the problem is and can be of help, That'd be great.

I have a Samsung SPH 660 and recently the text messages have been showing instead of the name of the sender. I know this is not a big deal but, I am not sure if there was a setting or something I could do to get this back to 'normal.' I have tried all of the setting and have restored the phone back to defaults and still, nothing.

When I have people stored in my phonebook their name used to appear and then you had to click it to get the text message. Now, just the text message appears. I used text messaging a lot, so it was always helpful to know before opening, who it was, sending me the text.

Thanks for you help!