I noticed this today after going through Apache error logs which got fairly large due to one css file calling a missing file in Prosper202.
Line 54 /202-css/tracking202.css :
Change the .jpg to .png as there is no file by that name.
Line 54 /202-css/tracking202.css :
background: url(/202-img/info_bg.jpg) 100% 0% #FFFFFF no-repeat;
Change the .jpg to .png as there is no file by that name.