Just now I powered up my macbook pro 13"(I bought it last August) and saw the white screen for several minutes, so I pressed and held the power button to force it shutdown, then I pressed it again, this time the machine boots as usual. I searched the website, saw other people having the same problem, many of them reported HDD failure, and I recall that several hours ago my Trash Can does not accept files for no reason, when I drag something into Trash it told me the item will be delete immediately, maybe this is related to the white screen of death and HDD problem. I am very worried about this, as I have some very important documents in my harddisk, I've already backed up them using CD and usb stick, because I am working on these documents, I cannot keep burning CDs after modifying bits and bits of the documents, and copy them to USB stick seems to be very inconvenient. I need some suggestions on: 1 Is my HDD about to die? I checked using Disk Utilities, it did not show any problem. 2 Is buying a new HDD a good idea for now? Or buy a USB HDD for time machine is a better option? I don't want to buy both internal HDD and USB HDD as I heard that Apple will replace HDD for free if it is a failure. Thanks very much!