Just wanted to post an update here. For starters, I've never had the HHD Slow error, but it's worth noting that I ran my R4 literally sitting on top of a sub two nights ago without a hitch. Combine that with what others have said after opening the unit up about the really nice shockmounting of the hard drive, and I think that really drives home that if you get a good unit, this is simply a non-issue.