The End of Signature-Based Antivirus Software?

nosig writes "PCMagazine is running a story around the latest AV-TEST response time and proactive detection test for the latest MS05-039 vulnerability related attacks. The test results were announced by the author to the focus-virus discussion list. What's really impresive, besides the huge difference between response times among antivirus companies, is that two products succeeded to proactively detect all 6 attacks without any signature update. "