I wonder how much of this "problem" might be the normal Maxtor seek noises while reading/writing? They would likely be magnified if it was housed in an external case. Here's what I would do, before contacting Maxtor to set up an RMA - download HDTach 2.61, and run it several times. See if there is a downward spike in the read-test graph, that corresponds with the occurance of the "clicking" noise. Also, check the System Event Log for any error messages that might occur. If either of those occurs, then your drive is likely having issues and you should RMA. However, if the graph, through several runs of HDTach read testing, shows a fairly-smooth graph (no spikes), then the drive is probably alright, especially if it still "clicks" while doing the read testing. (That would indicate that the "clicks" that you are hearing, are the normal seek noises of the drive, which are comparatively loud on the DM+9. It's the only drive in my case that I can hear seeking, over the noise of my 4 case fans and CPU fan.)