Amazing what you learn when you reveal your ignorance! Thanks, Keith, I've been using OSX for six months and didn't know about that! David On 5 Feb 2004, at 12:06, Keith Rowland wrote: > > If he is using OS X, you could use the "Activity Monitor" > (Applications/Utilities) and click on the System Memory tab, it shows > in a basic way (pie chart), the memory used by the system, in use by > apps and free unused memory.