Lost SMS amd call list

Today all my messages in SMS and my call list are empty. I have only had my Blackberry 8310 curve since 10/12/08. I was going to show someone a pic my daughter sent me on 10/31/08, that's when I noticed the files are empty.
I did a battery pull, no change.
Is this related to the time change? Any thoughts

Memory issue, check the link in my signature. That will fix it.

thanks.
I'm trading up to a BOLD and asking for the memory card for Christmas.

Hope you get them both, welcome to crackberry!