After updating to 10.6.3, I ran disk utility, and unlike the typical clean-up it usually performs, it alerted me that my disk's S.M.A.R.T. status was unverified and that the disk was physically damaged. I find this odd because I had performed disk utility before installation and everything went smoothly. Furthermore, the current disk performance is identical to that of when the S.M.A.R.T. status was "okay". This leads me to believe this may be related to the update, in which I have also heard others are having their SATA 3.0Gb/s HDD's operate at 1.5Gb/s speeds ... because the performance of the drive seems fine. Note that the S.M.A.R.T. status didn't come back as "failing" until after running disk utility. (No need to comment on backing up, I've already ordered another drive via RMA because it's not even a few months old, and I use TM religiously) Any other takers? Suggestions or thoughts?