MacFixIt - Mini-Tutorial: The dreaded spinning pinwheel

Many users of Mac OS X come to face the "spinning pizza-wheel of death" as one reader calls it. The spinning pinwheel is a sign that something is not quite right about your Mac. It seems the biggest cause is lack of memory to accomplish your work, but if adding memory doesn't help, here are a few other ideas to banish it from your daily Mac Life.

MacFixIt - Mini-Tutorial: The dreaded spinning pinwheel...
Avoiding unresponsiveness/slow-downs in Mac OS X"

(Via del.icio.us/tag/osx.)