Okay, something weird has happened.

I had Opera and IE open, along with a few other applications. I was trying to pull VBForums in IE when it hung. It was weird, so I just closed it (Alt F4). I tried to open IE again, but it would never come up. So I closed all my applications to reboot the machine (a problem with your browser being tied to your OS). Well, when I closed Opera it gave me an error.

After the reboot, Opera had no bookmarks.