I have a pie chart in the Dock showing the Activity Monitor. When I first fire up the Mac in the morning, the amount of free RAM is represented by a green segment/arc covering about 35 minutes (if you think of the pie chart as a clock face). As the hours pass, the green segment gradually lessens. After 3 or 4 hours, it is down to about 8 minutes. Where is it going? The Quicksilver has 1GB of RAM installed, is running 10.4.11 and the apps ready to go are Mail, Safari, Dashboard, Photoshop, Temperature Monitor and Activity Monitor. PatC.