For the last week, my HR24 has been making a noise thats hard to describe, but I do not think its OK. Ive not had any playback issues, but Im wondering if I should call them (I have the prot plan) and get it replaced? While sitting about 9 feet away, I can hear it from time to time, and some are worse than others. Its not the standard click when a drive goes bad, but its that type of pitch, almost sounds like the HDD has some grit in it that crackles around for a bit, then it'll quit for 10-15 minutes. Anyone thats every heard a water pump get something gritty in the impeller will know what I mean. Anywho, its pretty loud at 9 feet.