As a heads-up for Mac users, iStat Menus has just released version 2.0, which adds support for Snow Leopard. It’s a free application, but immensely useful. Stuck at 2GB RAM, I find the RAM meter to be useful, and clicking it gives me an overview of memory hogs. The CPU meters, disk usage and network bandwidth graphs, as well as the temperature are all indispensable, too. It’s so handy that I paid for it.