db corruption?

Is there any way that this theme could corrupt my Drupal database or anything else?

If you look at my site it's all messed up, after I tried most of the themes available from drupal.org. I don't remember which theme caused the problem, so I have to contact all theme developers and ask them for support. I have installed Drupal from scratch so it can't be any code or file, therefore the problem must be about the database.

Can you help me with this?