The new Windows Vista Service Packs 1 contains enhancements in form of performance, reliability, supports to new hardware and new emerging standards. The changes are a lot like Windows XP service packs and they make the os more stable.
For Technet plus and MSDN subscribers, they are able to download the newly integrated Windows Vista With Service Pack 1 to save 6 hours of upgrading Windows Vista when doing a clean install of the operating system.

What about non-subscribers?
:::Direct Download Link for Windows Vista (All) Splitsreamed With Service Pack One (Alternatives):::
1) Users can try the alternative such as through torrent or P2P and like always they have to use their original key regardless its OEM or Retail for the product to continue to work.
2) Thanks to University Technology Malaysia, you can also download the 32-bit version ISO from their server using your preferred download manager at the moment and it’s free.
Download link: Windows_Vista_SP1.iso
MDF: MD5 b09267740ddd1a08d80b04ec6bbc232a
July 3rd, 2008 at 2:52 am
wow..already came out ar..?
January 22nd, 2009 at 10:40 am
Very Good
January 25th, 2009 at 10:03 pm
It’s about time Microsoft did some work on this. Though with 7 coming out perhaps it doesn’t matter as much.
February 15th, 2009 at 8:59 pm
Windows 7 Beta Build 7022 is available for download through torrents too, read more here:
http://www.windows7tweaks.info/2009/02/downloads-download-windows-7-beta-build.html
March 14th, 2009 at 9:47 am
Windows 7 Build 7048 (RC1 ) is available too for download through torrents.
March 22nd, 2009 at 3:04 pm
All we are waiting for w7. Its faster, more reliable, and makes it easier to do what you want.
April 12th, 2009 at 3:40 pm
Universal Tech link is broken!
May 9th, 2009 at 7:55 pm
The word is “slipstreamed”, not “splitstreamed”.