i just got a Maxtor 4 500 gig - $69 from staples for my722 - but now i'm reading about (and experiencing) probs with it going to sleep -which makes use of it a bit cumbersome -when i have to power it on/ off. i've been researching and i'm finding conflicting info= some say buy WD others say get an internal drive -that's the best way. what's the deal - is this sleep mode the only problem with these maxtors? is there an off the shelf one that doesn't have this problem? i welcome any/ all suggestions advice- thanks!