Opera Mini 6.0 suddenly reset

I was using my Opera Mini and it works fine as usual, but suddenly the page freezes and when I tried to refresh it, the 'opera can't connect to the network, please check your server' appears, and then I tried to save the page cause I haven't finished reading it, but the page won't save either. ('failed to save the page' appears.)

And all of a sudden, Opera Mini goes blankly white (I think at this point, the browser resets/reinstalled) then I have to endure a basic standard procedure - just like installing a new version. And it did change my Opera, for I lost all of my shortcuts, bookmarks, history and saved pages, but the thing that makes me confused is that my password/registry remained unchanged and I don't have to go through with logging in to my accounts etc, like nothing happened.

What happened to the history/bookmarks/saved pages? Are they somehow deleted, or was still there in the phone? I forgot where exactly I had set the saved pages folder, and I can't find an option to reset the folder in Opera Mini or the exact folder in my phone's file manager. Can they be retrieved, though?

I am using Nokia E63/Opera Mini 6.0 for Symbian.