i get a blue screen just before login screen, it lasts about 2 seconds now, it was only half a second long last week. i have the macbook about 6months. MACBOOK PRO : Software Mac OS X Lion 10.7.2 (11C74) I done a 'verify disk' and got this http://oi40.tinypic.com/2vbsyzs.jpg could this be the problem, why are they now wrong and will i be able to fix them? and why is their a warning saying one cannot be fixed? is this serious?