“When we say the system is slow we mean that it isn’t responding
to our input in a reasonable time, or taking too long to complete a
task. This can happen when there is *another* program using too
many system resources, starving *your* program of resources,
causing it to run slowly.“There are three common ways in which this can happen, and all
three of these scenarios can be equally crippling and put your
system into a state where it seems to be frozen. None of these
situations are harmful to your system (i.e., they make it slow
until the problem is resolved, but they don’t damage
anything)…”