Well I've been having reduced performance and beachballs with my Toshiba 1TB HDD. Started making weird noises, not ticking or clicking so I didn't think it was the heads but a noise that I originally thought were coming from the speakers like kinda scratching noise or seeking noise. I was able to successfully clone it to my 500GB and I just swapped them out. I put my Toshiba into an external and was still making those noises and with reduced performance still. Now I'm doing a secure 3 write pass and the noises stopped? It's quiet again so I wonder if something got corrupted? My cloned 500GB is running just fine with no issues. I'm going to run some tests on it but will probably just end up RMA'ing it or picking up a pair of the WD or the Samsungs.