We've made a new corporate branded thin client image based on the updated image downloaded from HP as you've mentioned at the begining of this thread. Our helpdesk are re-imaging the thin clients when they find one that has blue screened. We're tracking the ones that have been newly imaged to see if they blue screen again....
Sadly not much changes from our side. He have not received any reports of any imaged thin clients (with the new image) crashing again... but as your experiences have shown, I expect we may have some still crash on us...