The US government has been leery of upgrading to Windows Vista. Looks like it should have done so a lot sooner:
The Pentagon has suffered from a cyber attack so alarming that it has taken the unprecedented step of banning the use of external hardware devices, such as flash drives and DVD's, FOX News has learned.
The attack came in the form of a global virus or worm that is spreading rapidly throughout a number of military networks.
"We have detected a global virus for which there has been alerts, and we have seen some of this on our networks," a Pentagon official told FOX News. "We are now taking steps to mitigate the virus."
…
FOX News obtained a copy of one memo sent out last week to an Army division within the Pentagon warning of the cyber attack.
"Due to the presence of commercial malware, CDR USSTRATCOM has banned the use of removable media (thumb drives, CDRs/DVDRs, floppy disks) on all DoD networks and computers effective immediately."
Had they been using Windows Vista, they could have deployed BitLocker, as well as the Group Policy controls that disable USB removable media in Vista RTM and later. Oh well. We’re only at war right now and everything… it’s only our national security.