Hey I have a dual 1.8 g5. Had it for about a month now. It was quiet up until about 2 weeks ago. Now every 3 seconds or so There is a rumble coming from the hard drive like its loading something. Even at idle it rumbles every few seconds. What should I do its pretty annoying. Is there any scan I can do, or do I need a new hd. Its working fine right now just kinda loud.