Thanks sektionschef. In fact i've called Canon to describe the problem and what they said was working noise is inevitable in any sort of HDD and a individual defect couldn't be concluded before they hear the actual noise level. yes i can mail it to canon and let them check it, but then i 'll never get it back before the spring festival. That's the very occasion i would like to record with my new camcorder. so maybe i'll just take your advice

Of course if any other users here notice the sound too, i won't have to bother and i'll just accept it.