Hmm, I am not feeling any noticable "slow-down" after 6 months of use. I reinstalled the OS about 5 times (and no "zero outs", not that it would help me because it's just filling the drive), I also write about 20 Gb of data per day on average (download, raring, unraring and so on). Still takes me 16 seconds to start the computer from cold, and I can't really see any slowdown, the benchmark have dropped a bit, but not a lot, although Xbench never worked on this computer, as it gives strange results.