playing on the server, suddenly the game freezes (and the sound etc) and the HDD LED lights up (HDD in use) and screen stays frozen for a few seconds. in the meantime, i get owned by magik5 or some other tramp

this does not happen just once, but a few times in succession, for about 5-8 seconds each time.
i wonder whether it is PB trying to take a SS of me, and re-trying every time due to lack of success or something. i have no other background programs running, except vista windows updater or whatever and kaspersky I/S.
running vista x64 home premium, and lates punkbuster outfit
also poor k/d ratio when this happens


any suggestions?