Vista's going to make life very difficult for third-party security software companies. Companies like Symantec, who are both not happy about it, & making their displeasure known. MS, I see yet more anti-trust in your future...

"While Symantec executives did accuse Microsoft of being more difficult to work with on Vista than with previous operating system introductions, they stopped short of accusing Microsoft of antitrust violations."

Another "extremely critical" zero-day flaw for Internet Explorer 6 has been un-earthed. eWeek talks about it over here, while you can read the Secunia advisory here. Quoth MS, "what, me worry?"

"The exploit has been seeded at several porn sites hosted in Russia and is being used to launching drive-by malware downloads that appear to be hijacking Windows machines for use in botnets."