I recently purchased a brand new hitachi 30gb 5400rpm HD for ny laptop. I installed it along with a new 256mb ram stick and it makes a clicking noise whenever doing something. When idle, it is fine. I read the sticky on "clicking" hard drives and it was mainly due to a failing HD, but mine is brand new. Any thoughts? Also, my touch mouse on my laptop causes a slight whine whenever its being used. Any info is much appreciated.