Are widgets using database ?

I’ve tryed to move the database to another domain (blog)… all worked fine except the widgets plugin. I cant configure them anymore. It looks like this: http://www.ibb.ro/v.gif I can move them from Available to main an footer and I can see them in sidebar just like in the other blog.

I think this plugin use the database but i dont know where and what to change to get them work. I need help 🙁
To move my database i’ve replaced my old url with the new url.