I recieved some information today from Bugtraq for a release of a new browser vulnerability test. Try the test here.

17 tests are performed.
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* Microsoft Internet Explorer Navigate Function Cross Frame Access Vulnerability
* Microsoft Internet Explorer Temporary Internet Files Folder Disclosure Vulnerability
* Microsoft Internet Explorer MIME Header "Content-Type: audio-x-wav" Attachment Execution Vulnerability
* Microsoft Internet Explorer %00 Arbitrary File Execution Vulnerability
* Microsoft Internet Explorer DYNSRC File Information Disclosure Vulnerability
* Microsoft Internet Explorer Dialog Same Origin Policy Bypass Vulnerability
* Microsoft Internet Explorer Content-Disposition Handling File Execution Vulnerability
* Microsoft Internet Explorer Cookie Content Disclosure Vulnerability
* Microsoft Internet Explorer OBJECT Tag Same Origin Policy Violation Vulnerability
* Mozilla JavaScript URL Host Spoofing Arbitrary Cookie Access Vulnerability
* Microsoft Internet Explorer %2f in URL Same Origin Policy Violation Vulnerability
* Microsoft Internet Explorer Document Reference Zone Bypass Vulnerability
* Microsoft Internet Explorer Iframe Document Property Cross Domain Scripting Vulnerability
* Microsoft Internet Explorer document.write() Zone Bypass Vulnerability
* Microsoft Internet Explorer IFRAME dialogArguments Cross-Zone Access Vulnerability
* Microsoft Internet Explorer Dialog Style Same Origin Policy Bypass Vulnerability
* Microsoft Internet Explorer Multimedia Page Cross-Site Scripting Vulnerability

On the site you can read brief explanations about these vulnerabilities - I would suggest reading these. Also, if your AV/firewall is configured properly you should be immune to most of these. However, the site suggested running a test both with and without your AV/firewall, that way you can see the differences.

When the test is complete (it only took a couple of minutes) you will be given a report with any detected vulnerabilities and information on how to repair them. Another nice thing about this test is that it's free, fast, you don't need to register, and there is no waiting for your results.

Just a note -- when you click on 'start the test'.....make sure you read the little box of rules. A lot of windows and other things pop up during the test and these rules tell you what to do.