Well, it’s a start. PDF and SWF exploits are a major infection vector right now. Getting security updates rapidly and proactively are essential.
Vulnerabilities are no longer an opportunity to bash Microsoft. All software vendors (and even more for ubiquitous developers, like Adobe, Winzip, etc.) have to be extremely proactive on this front.
Blasted three months ago for being slow to fix a zero-day vulnerability in its popular PDF viewer, Adobe today promised it will root out bugs in older code, speed up the patching process and release regular security updates for Adobe Reader and Acrobat.