...this would be a good time to try another browser. Microsoft has announced that they have a security vulnerability in Internet Explorer, but they don't have a patch for it yet. The details of how to exploit this flaw have been published on the Net, so you can expect more bad guys to try to use it until MS has their patch ready.

Firefox is a good, free, browser to download and use until this problem goes away. You may even find that you prefer it to IE.