On occasion, I find that Finder is using over 100% of the CPU on a continuous basis. No applications are running. After reaching that point, Finder crashes and the spinning beach never leaves. I have checked the drive with my other Macbook Pro, using Disk Genius via Firewire, and there appears to be no problem with the hard drive. The problem machine... Macbook Pro 2.2 Ghz, 4 Gig of RAM, hard drive is a Seagate Momentus 160 Gig 7200 RPM notebook drive.