I use all types of vipower drives. When pulling out them always make sure no processes are using them. I would disable in device manager 1st. Putting in is a lot quicker. But once I did get a bsod. ALso never pull out the boot device.
I would get SAV 9 or 10.0+ I would also get a good hardware firewall. I used to recomend zone labs int desktop but recently it been worse than the free consumer version.