Missing Icon and Wrong Info Display

1) ive just upgraded to Snow Leopard. and ive done a bootcamp partition. I realised that in leopard, i used to have two icons on my desktop at the top-right that says 'Macintosh HD' and 'Bootcamp'. But now, there isnt, i dunno is there some setting to bring it back or smth?

2) and another question, i upgraded my HD together with a clean installation of SL, its a new 7200rpm drive, its significantly faster, however, under 'About This Mac', the Serial-ATA tab shows rotational rate as 5400. why is that so???