Microsoft has officially released Service Pack 1 for Windows Vista. The SP1 packs 23 security updates and 550 hotfixes into a 435MB file.
* File copying should no longer have an ETA of hundreds of years
* UAC has been altered slightly, including fewer prompts in specific scenarios
* DirectX has been updated to support not only DirectX 9 and 10 hardware, but the backwards-compatible 10.1 as well
* WGA has been tweaked to address two of the most popular exploits
* Further support has been added for third party search solutions