Sometimes my laptop appear to be heavily loaded, ('top' reports an average around 25; moreover i can hear the fan running, sendmail is 'rejecting connections') although the cpu activity is well below 100 % (according to 'top') and no swapping on disk is occurring (as i can infer from the hard disk monitoring led). So what can i do to inderstand iwhat s happening? Is 'top' a reliable application? thank you --pol