I frequently recommend to people to use free anti-virus tools rather than paying an annual subscription fee. There are some quality products out there that offer the protection you need for virus protection.
They haven’t gone so far as to glue-up the USB connectors on their PCs, but the Pentagon has temporarily banned removable media of any type. This includes flash memory drives, external hard drives, CDs, devices that can be used as removable media (like an iPod) and so on
As a computer repair expert I do my best to track common threats and learn as much as possible about new and existing threats. Over just the last 2 weeks we have seen a huge surge in antivirus 2009. Because of this we have written a few guides to help people understand this threat and teach them how to fully remove this as well.