I have 4GB of Corsair RAM on Windows Vista 32 bit home edition. When idle my RAM is still 27% used, does Vista really use that much or is something else afoot?
That looks about right.
With 4GB you really ought to be using Vista 64.
32bit vista you relly only get the 3.5gigs - your video card so 27% is just about right near a gig of memory for vista.
Turn off the Aero feature and the Windows sidebar, thats what eats up your resources.