I bought a Dell Vostro 3550 from almost new in september 2011, it had hardly been used by the previous owner and he'd put it back to factory default. In the last few weeks the Toshiba MK5061GS hard drive in it developed a problem, two reallocated sectors. I've been able to continue using it but it freezes, hangs, blue screens quite a lot and is getting worse. I've just ordered a WD Scorpio Black 500GB which comes tuesday, and not a moment too soon as I reckon this drive is all but dead. Are the toshiba drives generally not very good or was I just unlucky?