Your problems with not being able to end task biab once it crashes could well have more to do with your machine than biab. I highly recommend downloading sp3 from this link and installing it again even if it was originally installed from this source. http://www.microsoft.com/download/en/details.aspx?id=24

Ignore the advice to go to a different download. Because it's for multiple installations, this download is well tested and very stable, and easy to install on one machine. This way you know that you've got the latest and if your original update had or has developed any problems they'll be corrected. Doc Watson may need it.