Hi everyone, I have a relatively new Mac Pro which hasn't seen much use but started exhibiting hard drive problems. The first symptom was that the system randomly would become extremely slow. I was encoding some video for iPod with qt pro, and my girlfriend's base macbook was doing it faster. I suspected hd trouble, so I ran Disk Utility which showed problems it couldn't fix. So I booted from the Install Disk and ran Disk Utility. This somehow broke something, and when I restarted, my HDD icon had disappeared. I couldn't get a finder window up, couldn't use spotlight etc, but oddly applications on the dock would start and I could use Safari. But anything that involved saving or loading or even looking for files did nothing. Spent a bit of time on the phone with Applecare, and ended up doing a complete reinstall. Now my HDD is back and seems to be working, however one small issue is that when installing applications, the install program takes forever to identify that there's a drive to install to. Disk Utility takes a while to recognise it's there too, but then checks it out fine. What do we reckon is going on?