For reasons I can't explain, I had the idea in my head that it didn't matter where my assets were located. I have them all stored on my network. So when I imported them into PP CS5, everything bogged down to a near-halt. So, now I've replace my two 'green' 2TB drives with two 7200rpm enterprise sata's, set them up striped, AND my new workflow is that I place the needed assets on the striped pair first, before I import and get to work. Everything is now working the way it's supposed to. I can finally get some real editing done.