iAudio G3 locks

I recently got a Cowon iAudio mp3/ogg player - a very nice little thing. However, using the supplied USB cable to transfer files (via Konqueror) causes it to lock the entire PC at the end of file transfer (when this happens varies, but it always does, whether I transfer 3 or 40 files), forcing a reboot of the host PC. The odd thing is that other G3 owners using Gentoo, Debian and Slackware don't have this problem. Would anyone have any suggestions on where to look to start teasing out this problem? Thanks -- Pob hwyl / Best wishes Kevin Donnelly www.kyfieithu.co.uk - Meddalwedd Rhydd yn Gymraeg www.cymrux.org.uk - Linux Cymraeg ar un CD!