I also use vista and also plug in an usb hub. However, my hibernation has never shown the problem. I think it is because of the usb hub you used is not really compatible to vista.
Download the Anti-virus-1 removal tool at Softpedia:
http://www.softpedia.com/get/Antivirus/Remove-Anti-Virus-1.shtml or refer the removal guide at http://freeofvirus.blogspot.com/2009/03/anti-virus-1-removal-tool.html