Hello All, Over the last few weeks I have noticed some strange behavior that is really bugging me when using my Mac Pro. Its particularly annoying now that is has my attention. The stock hard drive in the system (WDC Black 1TB), which I use at the boot drive (I have not taken the SSD plunge yet) is quite noisy after I get to the desktop portion of my boot sequence. It then continues to whir and spin for way longer than I think it should to get the system into a solid usable state. Let me be more specific. I push the power button on my Mac.... I get to the logon screen pretty quickly and while the system sits there and waits for me to logon, its dead quiet, hard drive isn't spinning at all. Then I log in... and the desktop starts loading. At this point the hard drive starts spinning and is noticeably loud. Its not making clunking noises, it just sounds like SCSI drives used to. But the noise is not what bothers me, its that it keeps churning away for like 5 mins, which is an eternity and means that apps wont load up fast and snappy during that period. The system takes at least 5 minutes before the drive stops accessing and is fully ready for me to launch an app. If I get impatient and try to launch an app before the drive quiets down, the app will launch, but SLOWLY cause the hard drive is doing whatever the hell else its doing during that 5 min period. So I end up with a very powerful machine that I have to WAIT on just to launch a web browser. This 5k system should not require that type of patience for the desktop to load. I know its not a general hardware problem because the system renders and processes everything VERY quickly when the Hard drive is not the bottleneck. I also know the hard drive is not broken. It passes all the basic tests, SMART, surface scan, etc. I even disabled Spotlight for now, because i thought it was MDWORKER that was causing the problem, but to no avail, because it still keeps whirring for the 5 min period once it hits the desktop. What could be causing this? So kind of File or Mac DB corruption? Is this the type of thing Disk Warrior could fix or repair automatically? What advice or steps can I take at this point to fix this? One last data point. I use bootcamp on this system on the same 1 TB drive and when I boot the system into windows 7, is is lightning fast at the desktop loading portion and does not spin on for 5 mins using up the hard drive as a resource. Any advice is appreciated.