Hi, just got my CS11S and the fan keeps coming on is this normal, it seems noisey to me
there's already a thread about the CS series fan problems. the frequency of the fan coming on depends obviously on the kind of work you're doing and if the ventilation vents are semi-blocked, etc.
several CS users, including me, have noticed an unusual clicking sound when the fan goes off, it's being discussed in that thread and there's an youtube video about it
http://club.vaio.sony.co.uk/clubvaio/gb/en/forum/viewthread?thread=59310