AVG has released an update to its popular free anti-virus program. Version 9.0 is available by updating from 8.5 or directly from http://www.avg.com. Version 9.0 is still offered in a free form, but it takes a bit of hunting to find it.
So far, I’ve found its performance to be a little slower than 8.5, but hopefully a few updates over the next few weeks will fix it.