Jim Hamm files this report today, "If you've installed Snow Leopard, Menu Meter (iStat Menus) is now compatible with this new OS. The new version has been completely revised, and is much better. It sits in the menu bar, and you can click on one of the icons to get a variety of information about your Mac. You can also customize which icons you want to show in the menu bar: open System Preferences, then click iStat Menus. Drag the items from the 'Available Box' into the 'Active Box.' I use the app occasionally just to see what's going on in my Mac, and which app is consuming so much memory. Usually it's Safari. Closing and reopening Safari gets the memory usage back to a much smaller number. If you've not tried this app, it might be worth a look. It also works with Leopard, as well (OS X 10.5 or higher)."