Windows Vista is now improved with its Service Pack 1 Release. For more stability and reliability, you may download and install Microsoft’s Service Pack 1 for Vista. This service pack contains numerous patchs to resolve current bugs and issues.
Mainly, it is focused on resolving computer performance and reliability issues as well as 
supporting new types of hardware. Without Service Pack 1, there was a problem with recognizing many types of printers, scanners, and usb devices. Without being able to have Vista support, such peripherals forced Windows users to have paperweights instead of useful equipment. The Service Pack 1 is supposed to support more of these devices.
Further, IT administration for rolling out Vista is supposed to be easier. No specific mention of how IT administration would be easier, but we imagine this deals with being able to easily migrate a Vista computer into a current Windows environment. Also, we will be beta testing this Service Pack 1 to see if Windows VPN / remote support will be 
more reliable.
Additional features and add-ons will be coming out separately in future releases. For now, hopefully this SP1 will make Vista more of a reliable stable Windows operating system.