watching short video when pc froze. baud rate > 25Mbps; checked task manager and found 13 entries for Win Asst Tech, over 20 LibreOffice, 8 libreoffice writer, there were many apps [disappeared while writing this post]. All copies used negligible cpu and memory. Just froze up again and have very long waits to connect to internet.
pc is Dell Precision 6300, Vista pc upgraded to Win 7.