Read the article bellow, My own experience with windows desktop search 4 on
XP was that of disgust. It sucked up 70 MB of ram with its 4 processes, Its
a pile of crap like all vista inspired software.. after living on 2 of my
computers for 2 days I removed it .. (I had tried the previous version too
and didnt like that one either.)

Article

[url]http://www.liveside.net/blogs/opinion/archive/2008/04/01/a-brief-history-of-windows-search-4-0-beta-and-why-vista-search-still-sucks.aspx[/url]