Windows Vista Service pack 1 which was a major release from Microsoft is very much open to hackers and malware.

Why? because it actually blocks/prevents several famous Anti Virus programs which includes one Alarm Security Suite 7.1, Trend Micro Internet Security 2008, Jiangmin antivirus product and BitDefender 10.

The reason Microsoft came up with that these antivirus programs are not compatible with Windows Vista service pack 1.and for some reliability reasons, Microsoft blocks these programs from starting after you install Windows Vista SP1. Also, programs like Novell's ZCM Agent and The New York Times reader software are also blocked and can't be run on Microsoft Windows Vista Service Pack1.

It's not the first glitch for Windows Vista SP1. Microsoft earlier this week pulled from the Windows Update site a file that's a prerequisite to installing the service pack. The company said the file, known simply as KB937287, can cause host computers to enter an endless cycle of boots and reboots.

Now Microsoft already has delayed the distribution of Vista SP1 because they couldn't resolve compatibility issues with some software drivers that control PC peripherals such as mice, keyboards, and printers and it Microsoft Vista service pack won't be available as a manual download until mid-March on Windows Update.

Even then, installation will be rejected on PCs with the problem drivers. Affected users who want to access the software regardless will be able to download it directly from Microsoft.com. So whats the good news? In my opinion, nothing! those 300 bug fixes gifts that originally came with Microsoft XP a year back doesn't count.

Souce: Information Week