Generally the media actually makes more noise about something like this over the facts. The latest Conficker is actually the 4th variant since last fall. How many have even heard it of it before this week? I wouldn't actually say that many.
With this being an I-Worm type you actually have to click on it somehow whether saving to a folder or trying to open it for a look is where you get the surprize with any of them.
The actual bug you have there is likely something in Windows like a now bad or missing file or seeing an unintended change from a partial or bad install of some program lately When going to make the password change and start up the next morning whamo something finally gave out.
The one thing too often forgotten about any beta is simply the fact that it is "beta" where crashes and feedback result in progressive builds seeing improvements. You have to expect possible crashes while testing is in progress.
They certainly don't call them "test machines" for nothing!

[cccrashhh]
"7 you poor thing! I never meant to do that."


oh welll... you just have to be prepared.