Google just won an argument with Microsoft before their lawyers even got to deliver an opening statement; Microsoft decided to take the high road and allow users to decide which desktop search program to use. If you select Google for all your desktop searching needs, then the Vista seach engine will be disabled, thus no longer causing the performance hit that was irritating Google in the first place.
"In a filing made jointly with the Justice Department on Tuesday night, Microsoft said it would change the search feature as part of the first service pack to Windows Vista. In the filing, Microsoft talked for the first time about when that service pack would arrive, saying a beta version will come by the end of the year.
Under the agreement, Microsoft will create a mechanism whereby both computer makers and individuals will be able to choose a default desktop search program, much as they can choose a rival browser or media player, even though those technologies are built into Windows."